I have been lifting on and off for years it was never really serious until 2010/2011. Since then I have lifted fairly consistently, adding some size and strength though not as much as I would like. My goal has always been to just be fit, but now I am wanting to progress into the bodybuilding physique.

The same reason you do. Walking around feeling pumped! Seriously, it is great for my mood. It gives me a feeling of self worth and achievement. I love feeling pumped when my muscles swell with nutrients after a good set, and as a christian i believe it is important to take care of the body i was given. And, truthfully, the more I do it, the more addicted I become. :)