I want to kill myself. I don't know why. I've been feeling this for a while now, and I don't wanna live. I'm not gonna act on it, I have a 9yo brother (I'm 25M) and I don't wanna traumatize him. 
I tried talking to my close friends about it, and they were indifferent to what I said. I KNOW they care if I live or die, but just not enough to listen to me or talk me out of it. I feel I'm worthless. I feel I don't deserve whatever good I have. I just wanna cease to exist.