I certainly agree that children are a big responsibility, and take a lot of time... From what I've seen, though, of small businesses? Experience matters even more. I know a bunch of Entrepreneurs who are also parents. I don't personally understand how, I don't think I could handle being a parent even with an easy office job, but many entrepreneurs seem to be able to be a parent and run a business at the same time. I can't tell you how many of the informal meetings that are also dinner parties had children underfoot, but it's a reasonably large percentage.

Even if you do think that having a child will slow you down, being older doesn't automatically mean you will become a parent... the technology in that field is pretty good at this point.

There is good decade between when you graduate and when you expect children.

Starting a business before 20-21 is not really ideal. Yes, some people can do it. But those people have an over the top mental and emotional maturity that nominal case is lacking, and college is a great way to get there.

Are you really suggesting that you see a CEO in a nominal high school graduate? Most of them don't have a slightest clue how to deal with people, let alone negotiate their terms -- knowledge in domain being aside.