I'm a fan of taking the simplest, reasonable route to wealth, then investing in something of greater importance, something that critics would agree improves humanity.
The canonical examples are Elon Musk and Bill Gates, but of course there must be thousands of examples where the risk doesn't pay off, and the deferred altruist ends up unable to contribute much at all.
Perhaps I'm just finding a way of justifying being miserly now, but I certainly intend to pay it back in cash if I'm successful, or in time if I'm not.
How do you know how long you're going to live, such that you can switch from miserly to altruistic halfway through?
Couldn't have said this better myself. Thank you :)