twitter, reddit, 4chan and instagram/facebook, could be good examples of what I am talking about, you have people from all different ideologies, and all of them forget about empathy so much, maybe I am just depressed but god damn, 20 people died here because of a fucking football match, are you fucking serious?, is just looking at the window you have online to take a look to the world to see how messy things are because everyone closes to listening to the other person, I am tired of treating people well and trying to make them understand they shouldn't believe everything they see online/tv, but it's all so tiresome, I don't even treat people well because I want them to like me but because is basic manners to treat others well, I am tired of being that nice guy that says to old grannies good morning everyday and listens to girls problems despite knowing none of them actually are my friends, everything just seems like a fucking mess. The world is a soup of vomit and I have to eat while pretending everything it's cool and doing alright?, that people is not fucking retarded?, do I really have to do that?, do I really?, do I?...

No, you don't have to pretend. It's just you have to find people you trust and hang out with them.

You're right about what you feel. Accept how you feel and choose either to continue living the way you do or change it somehow(find new friends, move to another city, etc).