Actually, I was referring more to conservatives than to any specific religious group, although I do believe that much of the problems that people have with sexuality, especially OTHER people's sexuality, is founded in religious belief. But atheists can be just as "prudish", so no, I'm not trying to make that connection.

There are just some people who are dedicated to making sure that other people not be allowed to do anything that they themselves find offensive, or wrong. In this country those people tend to be conservatives (though by no means exclusively) and yes, many of those conservatives are very religious. But ultimately I agree with you: you don't have to be religious to hold such opinions. But just maybe you have to have been exposed to it somewhere in order to form those opinions? Personally, I don't know why anyone would object to my buying pornography other than for religious reasons, but I'm sure you'll be able to give me reasons.