Wow, you guys really know your histories of Middle Earth. I'm impressed.

Stopping the alignment jokes for Feanor and co., and getting back to the argument at hand, I can think of one good reason not to get all uppity about evil elves. Same reason you don't want to upset an evil dragon, they likely live longer than you. Do you really want to confront an elf wizard who thinks mind controlling the king is a good way to get what the party needs about his ethics, knowing full well he'll likely outlive your grand children? Probably not.

But hey, welcome to the wonderful world of D&D racism. Who says there aren't advantages to people judging you based on your race?