its a toos up between skiing and soccer. when the season is in i love them both the same. during the winter i come home from skiing around 5 and im off to play 2.5 non-stop hours of soccer at 8. i can never get enough of either.
I think PETER had some good points above. Skiing isn't really a sport, more of a passion. Yes, it can be made into a competition, but the nature of it is to go out and have fun completely separate from everyone else. Sports like basketball, football, soccer, etc, are completely contigent on being better than someone else in order to have fun or be "successful" at it. So many people are this site will probably be up in arms that their favorite thing to do isn't a sport, but get over it. Just a definition. It is still fun. That being said, I chose basketball season over skiing every year until I was out of high school, so I guess I would have to say basketball. I would have done the same for lacrosse or soccer, so I guess both of those, too.
But now skiing is my favorite thing to do, bar-none.