If you have sexual interaction with your wife, how long do you last before cum?
I personally do not last long during penetration.
Probably in 99% of the pussy penetration I cum in less than 1.5 minute. If it comes to anal then 1 minute is a lot. If sometimes it is longer than this then it is usually bad erection.
My first ever sex was like 15 minutes of eating wife's pussy and 30 seconds of penetration. Sometimes I could and still can cum during pussy or ass licking or just watching her with dildo. So at the beginning she asked me to lick her first and then she wanted to have penetration but I almost cum already, so a few strokes and done. She was excited at the time and then we tried a few techniques which slightly helped but still not a lot.
Wife started become disappointed and we moved towards me more eating her ass and pussy, playing with fingers, dildos or wife being with dildo on her own for as long as she needs. I really enjoy more eating ass and pussy along with playing than just penetration and so does my wife now. In that case we can prolongate and enjoy "our" sex longer for hour or more.
This is one of the key point that developed me as cuckold and what is most important led my wife dreaming about threesome and gangbangs.