1. Nearly unlimited tire choices
2. Events nearly every weekend
3. that allow you to ride what ever you want
4. and compete in any distance no matter your skill or fitness level
5. Winning isn't as important as just showing up
6. Most events are economical
7. except Waterloo Grit and Gravel. But hey everyone has to take it up the butt sometime 
8. Cool awards
9. no license required. Yet
10. Safe traffic free roads
11. ride trails, beaches.. what ever
12. not as dangerous as crit or road racing
13. lots of cool bike designs
14. Attitude free folks
15. ok, not everyone!
16. the Ability to get closer to nature

Dont die wondering