I don't see how this would be any different from any of the billion other possible game-theoretic freeloader problems.
By this logic, all the possible freeloader things that you're doing (i.e. the contributions you're not giving that some large number of other people are giving) are also worth consideration relative to their potential or possible value to society. Have you watered a plant today? Have you walked to work instead of using a car today? Have you saved someone's life today? Have you taught someone something useful today? Have you marginally assisted in future scientific and technological advances today? Or all of those things this hour? This minute? No? Because there's a lot of people out there who have, you freeloader! Sure, you might say you're prioritizing other things, that you're trying to contribute in other, better ways. This might work, you might even come out ahead, but you are prima facie a horrible being that causes all sorts of headaches for Game Theorists worldwide.
Now please proceed to ignore me and accuse people of freeloading on this particular problem that you think is more important than the other ones.
I have nothing against division of labor. Not everyone needs to be a farmer. But you can't effectively farm children so we need most people to pitch in. This is a volunteer system very unlike growing plants. If you grow plants and sell them to me then I'm not a freeloader. But if you raise children then I don't pay you for them, yet I still benefit. That's where the freeloader part comes in.
Now please proceed to ignore me
Why? I'm assuming this is some sort of sarcasm rather than an honest request, but please clarify if this is not the case. If it was sarcasm, what was it motivated by?
This topic is in vogue, so here's my pitch.
My fellow humans, I have some bad news and some good news. The bad news is that you are likely to eventually enter an enfeebled state, during which you will not be able to independently provide for yourself. Even worse, you will at some point altogether cease to function and then you can no longer contribute to the things you care about. The good news is that both of those problems can be ameliorated by the same scheme – the creation of new humans. The new humans can provide us with the assistance we need as our own abilities diminish. And when we cease to function, the new humans can carry on with the projects we value.
Now, the thing is, creating fully functioning new humans is a huge project, consuming many man-years of work. A person engaged in preparing and outfitting a new human will need to sacrifice a lot of time that could otherwise be devoted to personal leisure and other projects. We currently have a volunteer system for replenishing the population and in many ways this works well. Not everyone is well-placed for creating humans while some people are in a good position to create many. But this system is not perfect and it can be exploited. There are some freeloaders who do not create humans even though they are in a suitable position to do so. Those same people almost always value receiving care in old age and value humanity having a future. But they are relying on the rest of us to provide enough new humans for this to happen while they can devote all their time to other projects and zero time to diapers with poop in them.
Sometimes the non-child-creators justify their decision by suggesting that the projects they are working on are especially socially valuable and thus they can spend time on them in preference to child-creation without violating their duty to society. While it is *possible* that this argument goes through in some cases, it seems suspiciously self-serving. What is especially worth taking into account is that if the humans in question really are so highly valuable, they would statistically have highly valuable offspring. Thus, it seems doubtful in the general case that high-value people refraining from procreating is a net gain for society.
[Poorly conceived section on my personal experiences removed.]