I have had two people I know get prostate cancer.
First was a 60 year old Dentist friend who had stage 4 prostate cancer. He didn't want a radical prostectomy and instead paid for proton beam therapy at MD Andersen in the US. Put him into remission for 5 years or so then started having bladder problems, infections and complications from that. He recently passed 8 years after diagnosis.
Another guy was 50 when he was diagnosed with Stage 2. Since he was a fat, out of shape married guy married to the same in a woman, he had no sex life so didn't hesitate to get the radical prostectomy rather than trying radiation, the little radioactive seeds etc. That was 10 years ago and he has had no recurrence. I don't have the stomach to ask how his sex life is. One thing to note was that he was like 425 lbs and had to lose 125 lbs before the surgeons could even operate. So he got bariatric surgery forst to get his weight down. He's stayed at about 250 ever since.
But in the case of the OP, if his oncologist has recommended the removal, then it's more of a matter of life and death, not fucking.
Having said that, the prostate is the walnut sized gland under your t'aint that produces the liquid part of semen that gets mixed with sperm.. So there will be no ejaculating. I don't know the success rate of still getting wood afterwards but as he said, the surgeon said maybe, maybe not. But as I understand it, you can still have an orgasm and the same feeling.
I knew a guy years ago who had a plastic rod implanted in his dick. So best he said was that he could stick it in but it was not full of blood so it was only at the soft size, but with enough rigidity to get 'er in.
Best of luck
@gojays ! Good they caught it early. Was it first detected by elevated PSA, symptoms or the finger up the ass?