Fall and winter rock. We just need a good snow to get the slopes ready. I have riding on manmade junk. Also, any rap that has been made in the last 20 years is, in fact, crap. But on the same note, 90% of "music" made in the last 20 years is also crap.
Edit, and for the 19 year old arthritic kid. Start taking glucosamine condroitus. I used to have really bad knee pains from my years of skateboarding and speedskating and once you take it for a while it really makes a difference.