Of course, this in no way applies to me, but for other men (as well as women), it seems the common perception that quality sex must last for extended periods of time is more a result of societies' message, than personal opinion. A survey of a range of sex experts indicates that a satisfactory length of time for intercourse ranges from 3-13 minutes. Yep, you read that right. From the article:
The average therapists' responses defined the ranges of intercourse activity times: "adequate," from 3-7 minutes; "desirable," from 7-13 minutes; "too short" from 1-2 minutes; and "too long" from 10-30 minutes.
"A man's or woman's interpretation of his or her sexual functioning as well as the partner's relies on personal beliefs developed in part from society's messages, formal and informal," the researchers said. "Unfortunately, today's popular culture has reinforced stereotypes about sexual activity. Many men and women seem to believe the fantasy model of large penises, rock-hard erections and all-night-long intercourse."
Past research has found that a large percentage of men and women, who responded, wanted sex to last 30 minutes or longer.
"This seems a situation ripe for disappointment and dissatisfaction," said lead author Eric Corty, associate professor of psychology. "With this survey, we hope to dispel such fantasies and encourage men and women with realistic data about acceptable sexual intercourse, thus preventing sexual disappointments and dysfunctions."
You can read the whole article here. By the way, did I mention this doesn't apply to me?