> I have never seen a family nade of two women or two men

I have, and they were pretty healthy. Just because you haven't seen it in your tiny, limited experience doesn't mean there's anything inherently wrong with it, and if you're that ignorant, you might as well first ask rather than berate people who just love each other and want to start families.

By the way, the implication in your argument is that a couple having the biological capacity to breed makes them inherently better caretakers, which makes it the clown comment of the day. I guess the day I have children I'll take them to the zoo to make the local monkeys educate them on healthy relationships.