I underwent bladder and prostate removal last August which disconnects everything from your penis, nerve damage is common so erections are now impossible. So no semen and no erections, but doc gave me Viagra and said get one of those vacuum pumps. No luck with either. Doc said how about a shot? I said where? when? he said in the penis, works almost instantly. Gonna have to think about that one right now I don't have a partner and more or less use masturbation as a sleep aid but I will tell you an odd fact I can still have an orgasm with no erection and of course, nothing comes out but the mechanism or whatever that allows them still functions. So bladder removal definitely impacted my ability in the recreation department but I am cancer-free for now.