nobody wants me
 

i'm really struggling to cope and i think i'd be better off dead so i couldn't annoy anyone

I want you to be around, and I'm sure there are other people who do too. There is nobody who can replace the unique you...you are here, alive, and "you" will never happen again. Can you think of some reasons for living? It might help to think of helping a friend to find reasons to live rather than yourself?

Annoying people is not the end of the world. If they realize how you are feeling, that is not an annoyance at all. Life is give and take, it depends on the time and place. TAKE right now if you need it. It is OK. Noone wants to see you gone.