What do you mean leave? Like leave your country, town or life? I hope you don't mean life. You can get help for something like this. Not every only cares about themselves. If you ever need anybody to talk to.. shoot me a message. I know that you don't know me and that i don't know you, but, its the best I can offer you. I don't want anything out of it. Just to know that you are going to be okay. I really dislike to hear about people in the situation that you're in. I've been there before and snapped out of it a few times. Its hell. Everything will seriously be okay. Im going to leave you with a few words of wisdom that someone once told me.
You say that nobody wants to help or do anything unless they are getting something out of it right? Well textbook, thats being selfish, right? If you leave, you're the one being selfish because there are people out there that love you and wouldn't even want to live life knowing that you're gone. The state of mind that you're in right now may lead you to think that nobody loves you, but, I can assure you someone if not more than 1 love(s) you. Don't be selfish, its exactly what you hate about other people. Please find a doctor or someone to speak to. My message box is always open if you need to vent about anything.