I originally started going to the gym in college because I was on the crew team and needed to build some muscle. At this point I really didn't know what I was doing.
It wasn't until the following year (2002) when I really put a diet/training program together and followed it.

It makes me feel good, and is a great stress relief after being at work all day. Just being in the gym surrounded by people who care about themselves and their health is a good feeling.