Hey Fred -
Well, here's a response from a non pc guy on the very question of ED. I'm sorry you have to go through all you guys have to go through. But I do know of the comments and questions from other men. Pretty insensitive, but men can be pigs, as well all know.
Being in the ED boat for 27 years, I get lots of questions and comments about the very same thing, as most everyone knows of my condition.
I know some of the comments and personal questions directed at me were really a round about way to get some information - they are curious. There are a lot of guys that have the very same problems with ED that do not have PC. I have had many, many dialogs with men that I barely knew when they found out about my ED and treatments.
Personally, it never bothered me much. But when someone irritated me I would always tell them "man, it gets rock hard, like I was 18 again" - smile and walk away. Usually I never got another question or comment from them.
Welcome to the board - there are some exceptional people here, always taking their time to help.
All the best to you.