If you are talking about average time for intercourse before ejaculation, it all depends on who you ask. Some report that the average time for men to have intercourse before ejaculating is 4 minutes, while a recent article in Men's Health says 8-12 minutes. The Penguin Atlas of Sexual Human Behavior says it lasts about 15-20 minutes. The Kinsey Institute reports that 75% of all males reach orgasm within 2 minutes of penetration; thus pushing the average down to 3-5 minutes. In other words, men differ from one another sexually (especially through nature and nurture) to be able to pinpoint any true average.
If hubby last more than 10-15 minutes, I consider myself real lucky!
Well, consider this. It is probably as difficult for many men to hold off their orgasms beyond some reasonable time as it is for many women to reach their orgasms in a reasonable time. I don't think men try to climax sooner, just as women don't try to climax later - it is just the way things are, unfortunately.
Couples do need to practice and communicate in order to reach a reasonable compromise, but this can be difficult.
It all depends on how aroused the man is, when he last ejaculated, how tight the woman's vagina is and how quickly he wants to reach orgasm.
A man can thrust continually with the objective of reaching orgasm and ejaculating as soon as possible and therefore last just a few minutes or he can have a very slow, sensual act of intercourse in which he varies his penile thrusting and spends a lot of time stimulating his partner and lasts a long time.
I dont think there is such a thing as average. It varies from man to man and intercourse to intercourse.