Those who marry and are monogamous have the best sex they ever could because it\'s the only sex they\'ll ever know, a U.S. advocate for marriage says. Patrick Fagan, a senior fellow at the Family Research Council, a conservative group, said the University of Chicago\'s National Health and Social Life Survey, conducted in 1992, found the most enjoyable and most frequent sex occurring among married people, those who attended church weekly -- any church, whether Catholic or not -- and people who had the least sexual partners, U.S. News & World Report reported. Fagan also cited a study in 1994, by Andrew Greeley, a Catholic sociologist and priest, who published \"Sex: The Catholic Experience,\" and found: 68 percent of Catholics said they had sex at least once a week versus 56 percent of non-Catholics; 30 percent of Catholics said they had bought erotic underwear versus 20 percent of non-Catholics; and 80 percent of devout Catholic women approved of having sex for pleasure alone. Fagan made the statements in a talk entitled \"Porn in the Dorm: The Impact of Pornography on College Campus Life\" broadcast live online Wednesday to Catholic colleges and universities on how college students are prone to addiction to pornography and the detrimental impact this has on their education, their relationships and their future. Fagan, a former official of the George H.W. Bush administration, said the United States has pagan sexuality due to the growing presence of pornography in dorms and among married couples, the magazine reported. \"Homosexuality, infidelity, euthanasia, infanticide -- these were all common sexual practices of pagan Rome. Christians were for being very different, for being monogamous, faithful,\" Fagan said during the broadcast. Fagan said the Family Research Council, was working on collecting more recent data on sexual enjoyment.