what is the point of working out for yourself? You either do it for health, women, sports, or to be mr olympia.
Working out for health is working out for yourself.
Also, it can be spiritual---the gym as a means of "meditation" thru weight training. To learn how to absolve oneself of one's ego, and to learn how to discipline one's mind and body. Also, uses it as a means of goal setting.
A person can use painting as a means for entertaining others, spirituality, or monetary gain, or all of that. It's how you look at it.