Interesting. This thread is a really good idea, and I can't imagine that it won't get a lot of responses. I'm intrigued because it's probably the oldest thread I've seen. It's dated January of '05, and the OP (read: founder of the site) "joined" in November of '04. I'm wondering if there was only 6 members at the time, and that's why it had so few responses? Otherwise, can't figure it out.
Here's a list of 10 ...
1. Fresh air
2. Time with old friends
3. Meeting new friends
4. Practicing and getting better
5. New courses
6. New clubs, balls, and gadgets
7. Shooting really good scores
8. Playing poorly for most of a round (as in, "I should give up this game") then finishing strong to remind yourself that "Oh yeah, I effing love this game!"
9. Making the occasional birdie, and the really occasional eagle!
10. My absolute very favorite part of the game is playing a "perfect" hole. As in, visualizing the tee shot and executing it just as planned, then likewise with the approach shot, and then giving the birdie putt a good roll right on my intended line. If it falls in, great, but even if it doesn't and it leaves me a tap in par ... those are the most satisfying times for me on the course.