I disgust humans

well i am 30, lately im growing feelings of anger, disgust and hate towards other people. Everywhere i look i see a crowd of little things that do not have opinions, that know nothing about the world and most important that know absolutely nothing about themselves. I am growing a feeling that i live in a world full of lies, full of fake people, where the only thing that matters to everyone is sex and money. I even hate all this pretense of friendships and relationships. any kind of relationship is a marketing kinda thing. friends are there only when they need you, relationships cheating on each other because they lack responsibility, or because they always need more and more. Parents hitting their kids because they are gays/bi etc, kids at school making fun of others because they have acne or because they wear braces, wars, annoying belief systems, annoying lifestyles. I really sometimes feel that the only presence that is true towards me, is my dog.
And i grow to become as such as well. Angry, irresponsible, taking advantage of situations, calling my friends only when i need them (and of course nobody is there because is not their problem)
I used to be a completely different person, caring, making others feel good, but all i was receiving was a bunch of shit. For as long as i remember myself, thats what i was receiving, from my friends, relationships, work, classmates, colleagues, from EACH FAKING PERSON.
I hate News, i hate politicians, i hate rich, i hate poor, i hate doctors, i hate women, i hate men, i hate str8/gays i hate bisexual even more.
whats wrong with me? why do i feel so disappointed on humanity?