Another benefit would be that people would be better able to decide whether or not they personally want kids. Having kids is a lot of fucking work.. I don't even have kids, and I know this. If you're a woman, you get fat and mopey for nine months prior to popping out the little bundle of joy. Then you're still fat, and you have a mini human that cries, can't sleep through the night, and shits & vomits on you. Having kids is expensive, and takes a lot of effort and commitment to raise them right.

Yet, some people have this idealistic notion that it's gonna be like a cute-fest from the moment of conception - I feel this is especially true of teen moms, though I have no statistics to back that up. A parenting class would at least lay out the facts and show people just how hard it is. It would make a number of people reconsider.