Fantasizing about my death is something that I do quite often.
That sounds rough. Why do you think you fantasize about your death so much?
I have nothing to live for.
I think you should seriously considering talking to a therapist. It's not healthy to think like that and you need to speak with someone capable of helping you out. You're worth it!
I can't cope with life anymore.
I understand, and talking with a therapist or other mental health professional would definitely benefit you. They can teach you strategies in order to deal with the issues that you're facing.