"And it's wearing me out, your wearing me down"

Why do I even bother? I just don't understand how someone can be such a selfish person.  Why is the world full of selfish people. I would die for one of my friends, but why would none of them lift a finger for me?  With the exception of a few people, the rest of them just flat out suck. Actually it's just mainly one or two people that really suck.  They're too conceited and stuck in their own damn world.  I wish I could cry about it, but the sad fact is, is i've already cried myself dry over it.  Why do I have to feel that I need to be a good friend?