It’s a feeling I can’t really shake right now with the images on the news.
Pay for research on something you think is interesting or worthwhile?
Create a park or a museum?
(A bunch of billionaires-in-today's-terms from the 19th and early 20th centuries tended to do stuff like that, and a lot of the stuff they endowed is still around!)
Pay for an expensive social, architectural, scientific, or ecological experiment of some sort?
For your grandchildren, and your grandchildren's 2.3 children.