Your points about enjoyment are very good ones. After all, we know that job satisfaction is more important than money for happiness (as long as you're above the poverty line.)

In fact, I'm not naturally inclined to care much about money. But I know money would (1) allow me to do good through charitable giving and (2) allow me to help my (hypothetical) kids pay for college - something my dad did for me and which I'm extremely grateful for.