Nearly half of all men in the world climax with two minutes, according to a study done by Dr. Harry Fisch, author of a new book called "The New Naked: The Ultimate Sex Education for Grownups." He also says most women need an average of 5-7 minutes of vaginal penetration to reach orgasm. That sounds pretty accurate to me, although I've only had a handful of orgasms from vaginal sex alone, and most of those were faked.
Dr. Fish also writes:
Not surprisingly, there is an extremely large variation in the time it takes a couple to have sex, ranging from the excessively short (about two minutes or less, which famed sex researcher Alfred Kinsey dryly noted was a "frequent source of marital conflict") to the "Are you done yet?" (over forty minutes).
I enjoy sex just as much as the rest of you, but there's no way I want some dude slamming his junk inside of me for 45 minutes straight. That just hurts. This might be a little TMI, but I have a tilted uterus which causes pain from having sex at certain angles. It's actually called "collision dyspareunia," and it's when the penis hits the wall of the cervix and causes pain.
Read more at xoJane: 45 PERCENT OF MEN ORGASM IN UNDER TWO MINUTES AND I'M TOTALLY OK WITH THAT