Well I've been riding for about 10 weeks now and I wasn't sure if it was something I was going to like. I had to give up jogging because of a knee that thinks it's older than the rest of me and decided to try riding. I went over to Wally World and picked up a NEXT MTB, all aluminum, full susp, front disc brake, 21 speeds, you know...a decent bike for dept. stores. I'm pretty well certain that I'm now officially hooked on riding so I went out and bought a Trek 4300. WOW!! The first ride on this bike I almost doubled my distance and increased my saddle time by 20 minutes, picked up on the avg. speed by 2 mph, and I could have gone farther but I didn't have all day to devote to riding.
I'm sure that most all of you already know what a difference a decent set of wheels will do for you, but I'm now officially a biker...well, I already am that since I ride motorcycles as well...but I'm liking this.