Earlier quoted context omitted.
Oh I totally agree, the US education system doesn't put any emphasis on helping kids figure out what they want to do after school. If a kid asks "when am I ever going to use this?", it's a sign you need to back up and lay some more groundwork. I don't know why it was different for me, but looking back I think it was important.
The vast majority of employed people are not doing "what they wanted to do when they grow up", and quite many are doing jobs they didn't even know existed.
In case anyone is wondering, I didn't become a Ninja Turtle.