Their rationales, cultures, religious beliefs, and backgrounds surprisingly are quite diverse. According to one statistic, the percentage of U.S. adults who wait until marriage to have sex is at about 3% which translates to approximately 10,000,000 individuals. The population of Americans who identify as LGBT is roughly 3.8%. Compare this with the roughly 1% of individuals who identify as asexual.
An article published in the Journal of Family Psychology by Dean Busby and colleagues (2011) found that even after controlling for religion, those who delayed sex until after marriage: rated sexual quality 15% higher than people who had premarital sex; rated relationship stability as 22% higher; rated satisfaction with their relationships 20% higher.