1) Harder to get hard! Loss of those kind of woody's we used to get in high school; or maybe still do in the middle of the night?
I can still get hard, but keeping a boner for the entire session is getting a lot more difficult. This probably started happening around 55 (I'm 61 right now).
2) Inability to go twice in a short time with a provider or other female?
This started happening back in my 40s. When I travel to Europe and visit FKKs or sex parties where multiple pops are expected, I usually have to recharge the batteries for an hour or more. That may have something to do with jet lag.
3) Dry orgasms (usually due to flomax or other medications)?
I don't take any prostate-type meds, so I pop in one form or another every time.
4) At what age did you begin using ed medication to help achieve a stand up soldier?
I started using generic ED meds that I bought over the counter in Europe, probably about 58 or 59. A 100 mg Viagra pill cut in half does the trick.
The biggest physical change has been the onset of Peyronie's Syndrome about 4 years ago. (I've posted about this previously.) My boner bends upward about 60 degrees and you can feel the scar tissue on top right behind the head. The doc has me taking a lot of Vitamin E before attempting anything more intrusive. But, the plumbing works fine. Most ladies don't complain and several have said that the bend stimulates their G-Spot.