Because, without your all, all you have is all kinds of less than your all, and that is all the wrong ways to get your all, by doing your all. If all else fails, go to the mall. Or just give me a call.
Height is important, especially for b-ball.
If the ice is slippery, you will fall. You will fall harder, if you're tall. If you're too tall, and you jump with all your all, you'll hit your head in the hall. Light your butt on fire, that'll make you jump higher.