Merleau-Ponty quote
I have even reflected on all that.
What we OUGHT to do in/with our lives is that which we are GOOD AT which is also in demand by someone else on this Earth.
I was always good at math, so I landed in corporate financial consulting. Got the B.S., got the M.S., and went to work for one of the really big firms, then after 5 years on into industry producing things.
In a perfect world, everyone is productive somehow. This is because we all need to eat, we all need to clothe, we all need to shelter, we all need transportation, we all need health care, we all need education and training, we all need community and national defense because the world is such an evil place, and society has needs that must be filled everywhere.
So productivity is the ultimate requirement of all.
A lot of historic philosophers have lived on their trust funds, so they did not need to do anything. But this is an unfortunate (for society) anomaly because such a person is not very productive and as such is just a parasite on the whole community.
Q.E.D.