My parents were right about a lot of things, but as a kid you can't see it. Yes, it would be nice if I could play the piano now, but words can't describe how much I hated it as a kid. I might have more opportunities today if I had finished college, but I wasn't ready right after high school. A lot of them being hard on me ended up preparing me remarkably well for my professional life.

It's largely just another instance of delayed gratification like saving for retirement or making time for the gym. If you can suffer though actually being with your parents as a teen, you might appreciate having spent that time when you're older.