Personally I'd always prefer to not exist, I never should have suffered in this existence and wish I never existed more than anything, non-existence truly is all that's desirable to me as after all if I'm dead I cannot suffer and all is finally forgotten about for me, I find it such a cruel, futile burden to be conscious and have to experience anything at all in this existence I always saw as so unnecessary in the first place.
What I ultimately have a problem with is existence itself, to me existence truly does feel like the most terrible mistake and I'd prefer to painlessly die than prolong all the suffering in an existence I never would have chose just to face the torture of old age. Personally I find it terrifying how a human can suffer for so long and I just have no interest in suffering in general, I wish I could just die in peace and forget about it all, I'd be long gone if I had the option to just painlessly free myself from this existence I saw as causing nothing but harm with no limit as to how much one can suffer.