I don't know whether it's normal or not, but sex has always been something that I take seriously. I would put it higher than tennis on my list of constructive things to do.
Art BuchwaldPut yourself in Hamlet's shoes. Suppose you were a prince, and you came back from college to discover that your uncle had murdered your father and married your mother, and you fell in love with a beautiful girl and mistakenly murdered her father, and then she went crazy and drowned herself. What would you do? Go back for a masters?
Art Buchwald