Bro you described my situation to a T. If I could cry this would make me do it.I can't live like this so why bother? I have no memory, no soul, no emotions, no time perception, no hunger no thirst, can't sweat, can't feel temperature, can't feel my body at all I don't exist, no opinions, no thoughts. Just been sitting here brain dead 3 years can't remember life before this. It all happened from antidepressants my gp cold turkeyed me and put me on mirtazapine and my life was over. Want to give up but I don't know what happens in the next life.
Take heart brother, so long as you continue on there is only one direction you can go. There is nothing deeper and lower than this imo.
I pray you can find the strength to keep fighting.