Would you rather that resources be allocated blindly? The fact that some people can live comfortably off their investments does not mean that the very investments themselves do not create wealth. Hedge funds do the latter, it's up to the government and society to decide on the former - i.e. how to distribute this wealth.
I'm not the OP, but it's a switch I'm strongly considering making. I'm looking at doing it by going back to get a Masters in Quantitative Finance, so that's one possible option.