Hi Chris, sorry I have not posted before but felt I had nothing to add until now.
We are similar/ not similar, I was diagnosed last October age 49, I have 3 kids, 10, 15 and 17, Gleson 9 PSA was 342 on dx now 5.
Before reading this, don't get me wrong, I have daily wobbles and tears, just had a bout due to C, prognosis statistically 4 years, never given any options ie HT plus chemo and RT only, toe and finger nails in a bad way, just had to self enema ready for RT this week ( why they make you practice twice before each session Lord knows), chemo ended but stopping taking steroids cold turkey may have has an effect on me mentally and to top it all have just got back from a "get away from it" holiday but had terrible tooth ache for the last 3 days so ruined that plus of course not an erection in sight this year but............
Stats are based on history and in the last 10 years where most stats come from, there has been massive advances in PC treatment so I genuinely believe any stat should " on average" move longer, those stats are not usually age divided, you like me are relatively young so I think that gives us a better chance so sod too much reliance on stats( accepting dark thought are going to happen).
As for sex, well I was a great fan of it and it's true to say that if you have a libido still ( as you clearly do) then you are going to miss it ( or think you will) however once the HT and other procedures kick in there is a good chance that ( statistically ha ha) you may not be so bothered. I am being selfish here ( ie not considering my wife's needs) but I have replaced sex with more running. There are still things you can do for your wife but more out of love for her rather than what's in it for me.
As has been said in earlier comments, sex v ( quality) life no contest for me or my wife , I am closer than ever to my family, feel good 90% of the time and plan things in rolling 3 month periods. I realise before I used to plan a holiday 12 months in advance and semi wish my life away to that time. Now I seize every day and have crammed more into the last 6 months than I would have before in 3 years.
The above may not make your choices any easier as I am not in your situation in that regard but what matters most is being around with general good quality of life as far as I see it , you may disagree of course.
A final thought, I am employed in the banking industry (boo hiss I hear the forum say) but one lesson we have learnt ( although I would say that I have never been involved in all the bad stuff) before we make any decision now is to think what today's action will look like under scrutiny in 5 or 10 years time, if we think we could hold our head up morally then we have made the right decision. So perhaps do that for your dilemma, in 5 or 10 years what would have mattered most in those proceeding years? In any case you may be able to have cake and eat it anyway.
Sorry for the long comment, hope I have not offended , take care
Kev