And I know some who aren’t. Personal anecdotes are nice and all, but they only get you so far in a discussion.
And, by this logic:
Why have them learn stuff at school at this stage?
It’s because the brains of younger people are more open to change and learning, more so as toddlers, but even in teenagers, to relate this to our discussion. That’s why they suggest piling up a second language when you’re young, because it’ll be much easier then than when your brain is developed fully.