Actually, couples who don't sleep together probably have great marriages. They are probably healthier, too, because they are getting a good night's sleep.
More and more married couples are agreeing that having separate bedrooms is not only good for getting a solid night's sleep, having separate bedrooms is saving their marriage.
Tracie Rozhon, in an article in the New York Times wrote, "According to the National Sleep Foundation in Washington, 75 percent of adults frequently either wake in the night or snore — and many have taken to separate beds just for those reasons."
Tracie quoted Gopal Ahluwalia, staff vice president of research at the National Association of Home Builders, "In a survey in February ... builders and architects predicted that more than 60 percent of custom houses would have dual master bedrooms by 2015 ... Some builders say more than a quarter of their new projects already do."