Really annoying, expensive and time-consuming. I don't really get why people are so excited about having one or more to be honest. I mean why should I waste time on that that when I can focus on a partner, pet or things? Also I wouldn't really want my kids to have whatever mental diseases I have anyways :v
And I think one should respect if another doesn't want a kid. It's their choice, their life and this universal whine force that people join and spit on people who doesn't have/want kids should be killed with fire.