I do it because there is nothing else like it. I worked out for a while, found PH's and knew instantly that I was gonna go all the way. I love to push myself to the extreme and this lets me push myself farther. I love the feeling, the look, the brotherhood, the attention from women. I love it all. The thing that keeps me coming back day after day is the feeling I get in the gym. When I walk in half deflated and watch myself turn into a monster during the session and the adrenalin is pumping and the music is pumping. Not much better.