What level of sexual prowess is reasonable to expect?

Personally, how many times a man can orgasm doesn’t interest me at all. What I care about is how many times he can make me orgasm, and whether he gives up after a short time, finishes himself off, then stops pleasuring me entirely because he’s done.

I only sleep with men who put my pleasure first - my current partner will always ensure that I come first, if he’s getting close he will stop and use his mouth, toys, etc on me until I have come at least once, then he’ll start up again so that we can finish together. If he finishes first, he always makes sure I get to finish too - he knows his job is not done until then. And, he is enthusiastic about it the whole time. I wouldn’t repeat the experience if he was unenthusiastic about my pleasure, or didn’t want to do the things that are most fun for me. He understands that well and is happy to make it a fun experience for me every time.

That is my standard for sex to happen at all, and I encourage you to make it your standard, too. Why would you want to repeat a sexual experience that you didn’t enjoy?

My advice would be to focus on your own pleasure first, most men can't climax more than once in one session anyways.

Twice with a 15-30 minute intermission is typically the best you can expect from an average healthy man under 40-50. That's what toys and tongues are there for though 🤷‍♀️

It depends on their age. Younger men have a much easier time getting it up. As men age, their testosterone drops, which can lead to erectile dysfunction as well as problems with libido. According to Google, about half of men between age 40 and 70 have some form of erectile dysfunction.

Multiple orgasms are much more common with women than they are with men. Men who can orgasm multiple times usually are only able to do it with the help of stimulants such as cocaine and meth. It's just really rare. I don't think I've ever seen a man who can orgasm twice in a sex session. I have seen men who can last a while, though.

And I'd consider it good manners if a man either holds off for me to orgasm first, or once he orgasms, he keeps going to make sure I get off too (if not with his dick, then with other body parts or a sex toy).

Depends on his age, doesn't it? I wouldn't find it surprising if a 50+ year old man can't go multiple times in a row. That's just age.

But if an otherwise healthy, younger man can't go again after a reasonable amount of time I'd think there's something wrong there (probably broke his dick with porn).

Edit: another thing: even if there's a reasonable explanation, I'd still expect him to put some effort into my pleasure until I'm finished. Sex is not over because he can't get hard again if I still haven't orgasmed.