Allgone,
just checking - are you, or have you been, on prostap (or similar)?
I was on prostap for over three years, but now that I've been off it for 7/8 months I'm getting lots of sexualised thoughts, and spontaneous 'semis'. This, I assume, is down to the re-supply of testosterone to my system. Like you, the length isn't there, neither is the stamina, but there is definitely life in the old dog again. My OH is very supportive, but she's out of practice too, so we're fumbling a bit at the moment. However since becoming aware that the life is there, comparing the state of my viagra-assisted erection a month ago with yesterday's spontaneous viagra-less effort, things are getting much better, as I presume my testosterone levels are increasing.
I think with the reintroduction of testosterone I'm actually going through something equating to teenage years, when like most boys I got pretty well obsessed with it. While I was on prostap I barely ever thought about sex at all, it simply never crossed my mind, except in jokes/humour.
Hope you can get things sorted out happily. Like my recent experience, it may be a testosterone issue.