Motivation changes with age. At 12 it was Bruce Lee, at 16 it was Arnie, at 27 it was Dorian Yates, at 36 it is the result of a few decisions on how I want to spend the rest of my life. Work has always been the equaliser, and has usually won out. Having the power rack at home is something I wish I had done 15 years ago.
At the end of the day, it is something I enjoy, I love making the lift, feeling pumped, getting toned and having more energy. I want to be big and strong and have the confidence and other benefits it brings, not fat and fatigued.