Chris,
I played hockey for 40 years, I started in 1964 and finished in 2004 when my knees just wouldn't take the twisting and turning anymore. I wasn't much good at hockey, a typical 5th XI player, but I loved it. I hated having to stop playing but I quickly got over it and moved on to other things (I play croquet now).
When I was diagnosed in July 2013 with advanced PCa and was put onto HT then, as we all know, that completely buggered up the sex drive and any ability to raise a smile. It is going to sound cold and unemotional but I've taken exactly the same attitude to that as I took to having to stop playing hockey, that's over, stop regretting it and move on to other things. It works for me.
If things change for you I hope you are also able to adapt and accept. Remember, love is far more important than sex.
David