Hell is unbearable. It is the ultimate pain. I would suggest that the whole point of hell is that the living is so bad that you can't stand it. The fact that you live in the state that you would choose to live in your 'apparent hell' is proof that you are not in it.
I don't mean to diminish your current suffering, but there are those that would choose the existence of 'nothingness' over an existence of suffering.
Personally, I believe in 'quantum immortality' and the multiverse so can't escape suffering no matter what. I bear my pain, as I know there is no escaping it. That also implies that you would exist in hell than disappear anyway, so I believe you would have no choice but to live in hell than disappear altogether as well.