keep working a high-paying job for sometime regardless. That way, he could gain valuable experience, and use the money he earns to eventually become financially independent, i.e., 'retire early'. Then, when he is age forty or something, he can do valuable work as a non-profit manager or researcher or personal assistant for free.

This is a career path I am very seriously considering. At the very least, I will continue to invest/save my money, if for no other reason that it doesn't seem intuitively obvious to me that I should prefer saving 100 lives this year to 104 lives next year. Add to this that I expect the EA movement to more accurately determine which charities are the most effective in future years (MIRI is highly uncertain to be the most effective, but could potentially be much more effective) and subtract the fact that donations to current effective charities will potentially eliminate some low hanging fruit. After all of that, I suspect it is probably a little more optimal to save money and donate later than to donate now. However I still can't shake the feeling that I'm just writing reasons for my bottom line of not giving my money away. This is a difficult question that there have been a number of threads on, and I don't claim to have a good answer to it, only my answer.