I don't really care much for kids either way (though since my mom works at an elementary school, I do experience the bad side of children a lot)
The problem is that, since I'm gay and have a boyfriend, there's no real way for us to have a child, and actually birthing/raising a child is the one of the biggest parts of being a parent, which we won't experience.
I mean, sure, there's adoption, but that takes out the entire point, because its someone else's child, not yours, it just has your name. Also, I'd make a fucking terrible parent, and most of the time to be a parent, you have to be a hypocrite 'do as I say not as I do' which isn't really fun for me. There's just a lot of things.
There is the option of having a surrogate mother, if you don't want to adopt.
Not too keen on kids personally, I don't have a particularly good attention span or patience. I can barely manage the dog. If I did eventually decide that I want to have a family, I think I would adopt, I'd like to think that it's not just DNA that can create a family.