To that extent, I do feel somewhat sorry when I hear that a billionaire has died, because I know that they likely spent most of their life pursuing things that are ultimately worthless, and it makes me re-evaluate just what I am doing with mine.
But billionaires def work less than a lot of people without monies.
There are billions that work 10+ hours per day just to survive (working for and making billionaires richer).
A life with much less experiences than any billionaire, less vacations, less family time, etc.