That's a question without a good answer; compare asking the same question about e.g. Thomas Road Baptist Church (minus the "Bay Area" part). Many members of th

That's a question without a good answer; compare asking the same question about e.g. Thomas Road Baptist Church (minus the "Bay Area" part). Many members of the Effective Altruism movement have given away substantial fractions of their income to e.g. paying for mosquito nets in Africa. A non-trivial fraction have donated a kidney to a stranger. They're also an onanistic Bay Area group.