Both.
I'm a total leech who can't contribute to society, as much as I'd love to. My presence is draining... I think my loved ones would be happier if I was gone. I'm not the person I used to be- I used to brighten their day, make them laugh, I'd always put a smile on people's faces, but I just don't ever see myself returning to that. I barely even talk to anyone anymore. I'm a downer. I haven't done anything that'd make people go 'holy shit you're a terrible person', but that doesn't mean I still don't deserve to die. In my eyes, there are more negatives than positives to having me around... therefore I would probably be better off dead.
I want to die because of all the above. I mean, there's plenty of other reasons, but I think that's actually the main one. I feel guilty for even being alive, it's a bit of a miserable existence and I want it to end.