Spath, so what happens if the parents DON'T educate their child? The child is left clueless, what a ridiculous way of thinking things can be? Of course you shouldn't have children if you're not prepared to educate and nurture them but some people do which is why education in a more formal manner is vital.
I would be a terrible match with a man of 20, I've never gone out with anyone less than 8 years older than I am, because generally until men hit their mid 30's they tend to be simplistic, immature, dull and small minded, so I'll settle for my wonderful 'ludicrous' relationship thanks with someone with a life of experiences that has shaped him to be clever, nuanced, fun, kind and nice to be with. You would be surprised how many women and girls feel the same, and the fact that you feel compatible people are 'ludicrous ' simply because of age says a huge amount about you. what is out of interest an acceptable age difference to you Spath (bet it's not more than 5 years)?
You can also leave home at any age ( 15 for example) and if you can show that you are not in danger of drugs, violence etc, either your parents or the local authority need to get a court order to compel you to return ( which is not always granted).