Metalject, I don't agree with you at all about this. Gains or anything for that matter that you're in to isn't meaningless. It means something to you!
But to get this away from being a philosophical question here, let me just say being rich and powerful (which you were claiming was the true definition of success) doesn't necessarily correlate with being an out-of-shape slob. There are plenty of poor out-of-shape people. There isn't many people in shape in the world in any economic class.
I can't prove this, but I bet you there are more wealthy people that are in shape proportionally to the class than there are in the lower classes.
And by the way, you may know of this guy:
He's like 70 years old, a billionaire and he's pretty jacked.