Horror movies started to wane around the onset of World War II, and after World War II, when all the troops came home, people weren't really interested in seeing horror movies, because they had the real horror right on their front doorsteps.
“By the time I finished comedy, I was really burnt out of it. I had had enough. I don't really have a strong desire to prove myself in that area, or to go back to it in any great way.”