In "The Immorality of Having Children" (2013, pdf) Rachels presents the "Famine Relief Argument against Having Children":
Conceiving and raising a child costs hundreds of thousands of dollars; that money would be far better spent on famine relief; therefore, conceiving and raising children is immoral.
They present this as a special case of Peter Singer's argument from Famine, Affluence, and Morality (1972), which is why they haven't called it something more reasonable like the "Opportunity Cost Argument".
[Note: the use of "Famine Relief" here is in reference to Peter Singer's 1972 example, but famine relief is not where your money does the most good. Treat the argument as "that money would be far better spent on GiveWell's top charities" or whatever organization you think is most effective.]
It's true that having and raising a child is very expensive. They use an estimate of $227k for the direct expenditure through age 18 while noting that college [1] and time costs could make this much higher. Let's use a higher estimate of $500k to account for these. Considered over twenty years, that's $25k/year or $2k/month. This puts it at the top of the range of expenses, next to housing. It's also true that this money can do a lot of good when spent on effective charities. At GiveWell's current best estimate of $2.3k this is enough money to save nearly one life per month. [2]
But perhaps we shouldn't be thinking of this money as an expense at all, and instead more as an investment? Could having kids be a contender for the most effective charity? That is, could having and raising kids be one of the most effective things you could do with your time and money?
For example you could convince your kid to be unusually generous, donating far more than they cost to raise. Except that it's much cheaper to convince other people's kids to be generous, and our influence on the adult behavior of our children is not that big. Alternatively, if you're unusually smart, by having kids you could help make there be more smart people in the future. But how many more generations will pass before we learn enough about the genetics of intelligence to make this aspect of parental genetics irrelevant? Rachels considers the idea that your having children might greatly benefit the world, and rightly finds it insufficient. While your child may do a lot of good, for the expense there are much better options. Having kids is not a contender for the most effective charity, or even very close.
Having kids is a special case of spending your time and money in ways that make you happy. A moral system for human beings needs to allow some amount of this. It's like working for $56k at a job you enjoy instead of getting $72k at a job you like less. [3] Or spending your free time reading instead of working extra hours building up a consulting business. Keeping in mind both the cost and that on average people don't seem to be happier parenting, if having kids is what would make you most happy for the expense in time and money then it seems justified.
(This is how Julia and I thought of it when deciding whether we should have kids.)
I also posted this on my blog.
[1] College is currently in a huge state of flux. Advertised costs are rising far faster than inflation as colleges realize they can get away with near perfect price discrimination in the form of "either pay the extremely high sticker price or give us all your financial data so we can determine exactly how much you can afford." At the same time online courses and mixed models are getting to where they can provide much of the value of traditional lecture courses, and in some ways do better. I have very little idea what to budget for college for a kid born now; likely costs range from "free" to "all you have".
[2] Rachels uses a much lower number:
Givewell.org, which assesses charities, estimates that a life is saved for every $205 spent on expanding immunization coverage for children in Africa Sub-Saharan—apparently one of the most cost-effective projects. See L. Brenzel et al. 2006, p. 401
Their Brenzel citation is to the Vaccine-Preventable Diseases section of the DCP2. The $205 number is "Estimated cost per death averted for the Traditional Immunization Program in Sub-Saharan Africa and South Asia" in table 20.5.
[3] This is a $16k difference, which comes from taking $500k over 20 years and dividing by two for the two parents, and then adding some for taxes. Though the earnings difference is likely to last more like 40 years.
This argument against having children is framed within a flawed economic and social system of belief and behavior, and suffers under the basic assumption that there is actually a famine, one whereby donating money to charity will provide a relief of and has moral value, and therefore falsely concludes that choosing to procreate over donating to famine relief charities during this perceived famine ( what i refer to as the famine problem) is bad for humanity.
In reality, the famine problem is predominantly caused by one moral problem split in two and will persist as long as our relief efforts are focused on the more indirect causes and therefore on more uncertain solutions :
ONE MORAL PROBLEM SPLIT IN TWO :
A LACK OF :
1/ moral education (thought/values/beliefs)
2/ moral behavior (resource sharing habits - intent/action/effects)
MY REASONS:
1/ It takes basic resources (not necessarily money) to raise a child ( Imagine the wide variety of people that are raised all around the world - from the isolated jungles to the congested cities) (i am not aware of the world being in any shortage of resources)
2/ Scarcity and greed are only mindsets and psychological states (beliefs) , which the existence of the famine problem depends on , therefore mindset substitution ( thought/values/beliefs) through proper education, and developing resource sharing habits (intent/action/effects) through moral behavior is the only true moral relief of the perceived scarcity and by extension the famine problem
3/ Conceiving and raising children properly (i.e. with moral eduction and behavior ) is a necessity condition for the continuous existence of a moral humanity and by that measure is a virtue . Its virtuous nature does not depend on a practitioners decision to chose it over addressing the the famine problem ( Though In the case of the actual argument against children and for famine relief donations, i don't believe either of these two (2) choices/actions are moral in and of itself as i think action or choice is only one subcomponent to assessing the moral aspect of human behavior (intent,action,effect) , and i can imagine many situations when the act of conceiving and raising a child, or making donation to a famine relief charity can be considered immoral - On reflection of these situations, the following proverbs came to mind - all that glitters is not gold ; don't judge a book by its cover)
4/ In Conceiving and raising children you have more and direct influence over the moral effect or outcome of your behavior than you would have when making charitable donations for famine relief. There is more moral value uncertainty (many more variable at play) with the charity option due to the fact that one has less and indirect influence over second and third order moral effects in the causal chain of the expected moral goal (e.g. whether the charity will distribute fairly, whether the real cause of the famine problem (i.e a lack of moral education and behavior) will get worst or better regardless of charity donations , whether the beneficiaries are or will be morally abiding citizens, etc) ( On Reflection of the moral value certainty of both options, i imagine pouring water into a cup with holes at the bottom, where the donate option has many more holes that the procreate option)
NB: I also believe there are some condition under which procreation and raising a child can be immoral: 1/ Done by people with immoral beliefs and behaviors (the kid and society will suffer) 2/ Done by people with high genetic and biological predispositions to giving birth to infirm offspring (the kid and society will suffer)
But even under these conditions, the immoral attribute or value is causally independent of a practitioner's decision to choose it over addressing the famine problem through charitable donations.