I agree with you. There are so many more worthwhile things to do than investing. I would also retire immediately with that kind of money and focus on creating real value in the world
You don't need retirement-level money to create "real value in the world"...
allocating capital well provides significant value to the world. His style of investing specifically meant not pouring money into hype stocks and instead investing in companies that have sustainable business models.
Have you ever considered that some people enjoy investing?
Imagine if I said "there are so many more worthwhile things to do than painting" if some famous artist retired.
That's a very selfish take.
For folks with the ability to make truckloads of money and then give it away to good causes, that is going to be the best choice v trying to add value in the world to make themselves feel better.