A lot of things, in my opinion. If you do work that can save even one life, it's worth it on a utilitarian level. It's not that hard to think of life-saving thi

A lot of things, in my opinion. If you do work that can save even one life, it's worth it on a utilitarian level. It's not that hard to think of life-saving things to work on. You could imagine, perhaps, COVID vaccine distribution, solar energy technology, suicide hotlines, lots of food solutions (impossible meat perhaps), even autonomous vehicles if you've drank the kool aid, etc. Of course this assumes that the 40th-80th hours provide marginal utility (perhaps a big assumption).