Which is the rub. Passionate people will be busy, all the time. Without it.. well, i can't even envision how to live.
I think parents need to help their children find hobbies. Find passions. Develop passions. You don't _have_ to be excellent at piano or whatever. I don't care what it is, be it games, wood working, farming, etc - but i feel like it is essential to the human experience.
But.. i've got an isolated view. So.. YMMV.