When I complained of having dined at a splendid table without hearing one sentence of conversation worthy of being remembered, he said, “Sir, there seldom is any such conversation.” BOSWELL. “Why then meet at table?” JOHNSON. “Why, to eat and drink together, and to promote kindness; and, Sir, this is better done when there is no solid conversation; for when there is, people differ in opinion, and get into bad humour, or some of the company who are not capable of such conversation, are left out, and feel themselves uneasy. It was for this reason, Sir Robert Walpole said, he always talked bawdy at his table, because in that all could join.”
That last sentence explains popular culture. The advantage of appealing to the lowest common denominator, the base desire, is that all can join in.