Anti-Surrogate Father

I've often thought that by not having children I'm making up for someone else having more than two as we hurtle towards the carrying capacity limit of the planet. Since I haven't been able to think of a way (well, a legal way at any rate) to have negative children, I can personally only make up for at most one other child being born. Being therefore a limited resource, I figure that ought to have value so perhaps I can auction the associated moral high ground off to a specific parent. The notion is quite similar to the way in which some people buy carbon credits to offset their activities. Bearing in mind that this would be the rights to an American child, the most resource intensive type in the world, I wonder how much I'd get?