Not everyone pops after 30sec 😁
I always been above average in time, and the older I get, the more I have colour my fantasies and use longer foreplay.
Anyway, I provided links to some articles, but there is a free world to think what you want.
The good thing with a partner who knows you, and play with you, knows which buttons to push, and manage to maintain an interesting sex life.
I see some do not understand how the same partner can be interesting over the years, to me it is the opposite, I'm not interested in constantly new partners trying to find someone who could turn me on, when I got what I need home. Looking and Flirting, yes, but not even tempted to go all the way,