They get laid a lot and that's the problem. Having zero morals, zero real human connections, consistent hedonism and nihilism tend to fuck you up in the head and make you bitter and angry which they deflect on to normal well adjusted people as wrong. Why else would they target the right who are statically happier, are more productive and have the one thing the left both despise and desperately want but will never ever get...a stable family and offspring.