Age has nothing to do with anything. ( to a certain extent, like for drinking, when your body needs to be there for it.) It doesn't have anything to do with how good you draw, it doesn't have anything to do with what age you really become a mature young adult, nothing.
My older sibling, is going through their first year in high school. So they think they're so mature now, and really, they have the maturity of a nine year old.
This is my honest opinion, that age doesn't have to do with when you should be allowed to do certain things, only when you're ready. Some people don't wake up and smell the coffe until late 20's, and some do at a young age.
If I offend you, I'm sorry. No wait. I don't care at all. You don't deserve any special treatment what so ever because YOU don't like what I said here.