You know what I heard, and makes sense to me? The reason so many homosexuals live in San Francisco is this:

During WWII, this was the embarkation port for the Pacific war. When these fellows (who were inclined to love men and not women) were discovered, they were sent BACK to San Francisco to be sent home again. However, the folks back home now knew why they were not in the armed forces any longer, and said, "No, thanks. Why don't you just stay your happy ass in California, Junior."

So, what do you think? Rumor? Fact?