I don't disagree with you on any particular point there. However, the quote I was responding to wasn't, as I see it, attempting to explore the cost/benefit of raising minimum wage or subsidising the future of children. It was stating that they just shouldn't have kids - and in that much represented an effective blank cheque. That seems the opposite of your, much more nuanced, approach; bound by implications of fact and reason that are going to be specific to particular issues and cases and thus can't be generalised in the same way.