I hope that my own experience may be of some assistance. I happily wanked my way at least daily (and sometimes several times daily) through my puberty, had vigorous sex two or three times weekly with my wife throughout my our 50 years of marriage, started punting a year after her death, and did so regularly until my 89th year, although 12 years ago I had to have an operation for benign enlarged prostate (contents lasered out under spinal anaesthetic, and throughout the procedure the Surgeon and I discussed the respective merits of cars). The operation had no detrimental effects on my sex life. I was recently advised that my prostate is again benignly enlarged, but after 2 recent heart attacks, a dose of lung cancer, and a leaking aorta I dare no longer even THINK of trying to get an erection, much less bothering about my prostate.
My advice is if you have an enlarged prostate get it seen to - you`ll only be out of action for a week or so, and stop wasting money on dodgy herbal remedies.