I used to skate when I was 15 - 20ish. Every day for hours on end. Me and a few buddies were sponsored by a small local shop, but nothing big. That was the greatest athletic time of my life - better than all the "normal" sports I had ever played. When you were on, it was like you were operating in another world. Conversely, when you were off....well, the board may get smashed in half.
Good times tho. I've put my deck thru a few store glass doors by accident in my day too.