Very little in GTA:SA was fun.
Good concepts, poor execution. Rather than put a few good, polished things in they tossed a ton of tedious things in. Girlfriends were idiotic and annoying. Even simply buying and/or changing clothes was a hassle due to a poor interface and enormous load times. You had little idea what you were trying on until you tried it on, and had to wait about 30 seconds just to see what it was, then another 10 just to take it off and get back to the menu.
Don't even get me started on the hour or two I spent hitting "X" watching my whiny jackass run on a treadmill. Was that supposed to be "gameplay?"