50 and still going strong. I agree with most of the comments about guys in their 20's but there are exceptions,like me,lol. Prior to my early 30's the only hobbying I did was at 3-4 bachelor parties. My view is no matter the age, you are interested in also pleasing an sp or you are not. I believe it is that black or white but I suppose it can change with time and maturity. That being said, sp or not, it has always been important for me that my sexual partner also enjoys our time togethar but some men are more selfish.
At my age only 1 sog per hour but quality of the sex is what counts for me not how many times I can cum in an hour. Again, regardless of age, my view is that you are 1 or the other. I've had several sp's tell me, "don't worry, you can cum more than once". This usually happens when I tell them I need to slow down a bit or I'll cum. I have pretty good control and can pretty much decide when I want to cume so my sessions tend to be about 40-45 minutes of action. Most seem to enjoy this because the 45 minutes are not all about me. When I was 20-25 I had some control but now I truly am "master of my own domain".