I think I'd like to have kids, not too many, but enough.
I don't think I hate kids, I'd just hate other people's kids.
But yeah, I'd want someone who I can bring up, and show the ways of the world, and watch them develop from a gargling hairless ball of flab into a fully fledged person.
And I also have some kind of outdated, archaic desire for my family name to continue, as I'm the young only male in my fathers side of the family.
Don't worry though I'm not gonna do what Chinese fathers did in response to the 1 child policy and kill/ abandon my daughters until I get a son to carry my name on...
EDIT: I just realised that I totally missed the point of the thread, so here goes:
The whole thing about choosing not to have kids, and the lack of respect (maybe?) that comes from that choice probably has to do with when, in times gone by, children were seen as something useful to have around, rather than a kind of luxury. For less affluent families, having more kids meant that;
A) the more you have, the more likely it was that some would survive into adulthood
B) kids were useful for helping around the house, cooking, collecting firewood, looking after the other kids, etc.
C) Having kids meant you had someone to look after you in old age, as back then there were no care homes etc.
D) You could hopefully marry your daughters off to a richer chappie, and hopefully advance your own position, socially and financially.
So yeah, the negative reaction to a decision to not have kids is probably a throwback to earlyer times, when kids were needed for day to day survival