I have also decided against children. I'm a fairly selfish person with my time, I understand what sacrifices are necessary to raise a child properly, and I don't think I am willing to do it. Better to not have any kids than to raise them half-*****. But that's just me.

Your take on what happens to people with kids is pretty accurate. As I've gotten older, and friends have given in to their reproductive urges, I've seen how they change, and while I understand the need, it's not good. Babies have a way of turning fully functioning adults into babbling fools. Groups of friends will quickly split into the child-laden vs the childless.

Don't wait too long if you are sure you want a child though. You don't want to fight off your teenage daughter's suitors or try to control your hooligan son when you are pushing towards 60.