Earlier quoted context omitted.
I don't think if I could live with myself if I worked at an investment bank. Most of what they do provides no benefit to humanity, in fact on the whole they're probably parasitic. Shuffling money around senselessly while taking a cut might be extremely profitable if you do enough of it, but it's just a drain on modern capitalism.
Many of the people I know that work in the vast world of "other people's money" feel exactly the same way, FWIW - on many occasions I've had discussions with them about the fact that all the only value they ever create is to shave the odd basis point off a spread here or there, and they have no illusions that it matters one bit. But it's an assload of easy money, and once you're in, it's trivially easy to stay in (it…
The smartest people I know care much more about tickling their brains than about earning insane amounts of money. They are happy with their middling six figure salaries doing quantum computing research and the like.