Ooops, sorry about posting this in the wrong place - mistake of a newbie!
My experience is from my 43 year old boyfriend. He's been to a doctor about the loss of sensitivity thing and basically the doctor said just put up with it, that's what happens when you are cut and get old.
I'm a bit worried for what's gonna happen to me when I am that age. Well, maybe I won't be interested in sex anymore by then.