I hate going to the gym because I'm self conscious and I only use it for the cardio equipment since I've got weights at home.  I also hate it because of so many fucking fat people.  That being said, I went too hard when I first started exercising again so now my knees can't handle more than a mile on outdoor terrain or a treadmill.  I'm stuck on the stupid elliptical foreverrrrrrrr...but I do wish I could be outside without being surrounded by fatties.