Ffs, it's depressing how some women always have to assume the worst n here...
My current bf doesn't finish every time when inside me... He's 49 and says he's never been quick, but would pretty much 100% reliably finish in his 20s and 30s, but things started to tail off into his 40s, which is probably just down to hormones waning.
However, he is able to stay hard for a long time though which is great and far better than a "5 second and it's done", and he doesn't just pump monotonously for half-an-hour either, but we have lots of great sex that isn't focussed on him achieving orgasm which is amazing 🤩
He thinks it's partly due to him being circumcised in his early 20s due to phimosis (tight foreskin) and a reduction in sensitivity down there following that, meaning he required more stimulation.
He also said that whilst single he did get used to orgasming solely through masturbation - which is stating the obvious really - which meant his body got used to this... I've watched him masturbate when with him, and it's definitely not a furious frenzy, just a steady rhythmical movement - he's shown me what he likes and apparently my grip was uncomfortably firm the first couple of times, so it's definitely not "death grip"!
Now he's with me, he says he's masturbating a lot less and allowing that sexual tension to build in him, which leads to great sex, and is now leading to an uptick in the number of orgasms he has, as he becomes more used to PIV sex than masturbation. We've only been having sex just short of a couple of months, so it's early days, but his "problem" is leading to some great sex sessions, and his focus gaining his pleasure from me is steadily increasing his ability to orgasm inside me... so hopefully that's a positive story to offset some of the knee-jerk cynicism on this thread.