There could be a kernel of truth to the statement that 90% of the women procreate with 10% of the men. Every woman wants an Alpha Male and every male wants a Beta Female.
::shrugs::
I do know (anecdotaly speaking) that alot of my male friends from High School that are close to my age (mid-30s to early 40s) have never been married, have no kids and have no want to engage in anything remotely like a relationship. Quite a few of my female friends of the same age are of the same mindset. I dunno, maybe its something to do with being a Gen Xer. I know that when I was 18, I was told by many, many people that I should settle down later (like in my 30s) and have a family and so on and so forth.