Mack , I recently had some radiotherapy at one of the Genesis care centres and they offered 5 free sessions. I don't recall the sessions focusing on the cancer it was more about attitudes to situations.
As already said, forums like this do have more people on it with problems ,than people without problems.
Again as said, side effects are not guaranteed to happen to everyone. I was initially 99 percent dry a couple of weeks after surgery. As regards intercourse with a flaccid penis, I describe my orgasms as out of this world, and the wife has no complaints.
I am fortunate to have a pro active approach to life's situations , I don't worry about things I can't change, I look for solutions.
Best wishes for the future with whatever route you take.
Thanks Chris