World Population imbalance between the sexes

[Taem]

There is no "natural order" from which we can reason in this fashion.

Fair enough, however it seems to me most of these calculations you guys are throwing out assume the majority of the world will in fact procreate. "There are 'x' billion people on the Earth, so in 'y' years, there will be 'z' more." Because of the fact people are living longer, how many of these people do you think are of procreating age? Of these people, how many will simply choose not to have children, or decide to live a homosexual lifestyle and adopt children? I would say in recent years with Gay Marriage on the rise, this trend is only set to grow, not recede, but I don't see any of this factoring into the calculations presented. I understand it's easy to look at common birthing trends, and draw some conclusions, but by taking the population as a whole and deriving some figures seems, well, incorrect. That is what I was hedging at. But perhaps the figures take all of this into account and I just misunderstood the data, in which case, I should shut up now.