Just riding for fun is the best part of motorcycling. You're gonna love it!
And the wrenching and modding really takes a whole new feeling when you are doing it as part of your enjoyment. I actually like that part as much as the riding part! It is so rewarding to ride on the results of your handiwork, and feel the improvements.
I know I'm a little crazy that way, but I just never get enough of that.