To tie it all back to the chicken-fucking book, conservatives demonstrate their tribal loyalty by showing preference towards those they have a cultural affinity to. Liberals demonstrate their tribal loyalty by showing no preference towards those they have a cultural affinity to. I think it's easier to be a misanthropic conservative because if you hate the right people, everyone who matters will put up with the fact that you hate them, too. It's tough being a misanthropic liberal because you're supposed to be above all that. I'd put it this way: you have a cultural bias towards non-shitty conservatives because they're putting up with you. Meanwhile you swim in a vast sea of liberals - you "know so many leftists" who are shitty but "most of your conservative friends" are great.