Actually, at the current rate of overpopulation, as many of us as possible would be well advised not to breed if we are to help the survival of the species. We are breeding ourselves into extinction. We do **not **need more kids around. However, for most people afflicted with “breeding sickness”, this simply does not seem to figure in the equation. I’ll agree that this is a reasonably new situation for humanity, but please, wake up and smell the roses. These are no longer the days of the emperor Augustus, those great old times of high infant mortality and a small population, when a woman needed to bear five children just to keep the population constant, and when it made sense to fine couples who didn’t reproduce. We really need to get the heck out of that kind of mindset. Today, it’s the mindless procreation that should be punishable. As soon as the global population drops to a sensible level, we might consider thinking about it in different terms again, but not yet.
Anyway, that little rant aside: in my not-so-humble opinion, having kids is a completely selfish act. The reasons why I think so have already been well stated by other dopers above. Reasons I hear given in favor having kids are always selfish ones: To carry on the name / the genes, to have someone to care for yourself in your old age, to “fulfill” your life, etc. You never hear any really selfless arguments for having kids, because, well, there aren’t any that would make sense.
For these reasons I have made a firm decision not to reproduce, if I can avoid it. Well, that, plus the fact that I’d make a lousy parent. I was put into the world by parents who had kids for no good reason, and who then proceeded to do a very half-assed job of raising them. I certainly have no desire to carry on that tradition.
However, adopting kids, kids that are already in the world and need care, is, in my opinion, the opposite of spawning them yourself - I consider adoption to be a completely selfless act. In this case, you take care of someone who needs it with no obvious benefit to your own genes. So, if you really *have *to have a snotty crap-machine around the house, and you *really *want to do some self-sacrifice - for goodness sakes, adopt! There are plenty of kids already out there who need homes.