Eliza, When I mentioned the guys leave, and who don't raise their own kids, I wasn't only referring to prison....there are plenty of schmucks out there, who are prisoners to their own horny-ness, that in their manipulations of women, to get what they want, they 'make a donation', then, for whatever manipulation they delude themselves with, do not raise the child, leaving the woman to her own wits.
That being said, you did bring up an aspect that I wasn't thinking of....Thanks for the contribution!

GfS