Why do i hate everyone except for a select few people?

Having worked with the general public? The large majority are cunts

its just that they hate you back, nothing personal

If you don't like people why would you spend all that effort and energy to hate them, when ignoring them completely is so much easier?
All you are doing is stressing yourself out and not hurting those you hate, one tiny bit.

Well, do you at least like dogs and cats?

Are you a misanthrope? That may be way.

And your hatred for others may be showing outwardly so that may be why people think you're cold/heartless.

Also, do the few select people have (a) trait/s in common? That may be a reason why you like them.

Anyway, I've come to find that plenty of people feel this way. I think it's a bit unfortunate, but you can't help how you feel (most of the time, I think unless if it's an illogical belief that leads to these feelings).

i dont think your cold or heartless yo