Having just discussed this very topic with a friend of mine, I was pleasantly surprised to find my (almost) exact words of wisdom in a children's book:
"There are three things I've learned never to discuss with people: religion, politics, and the Great Pumpkin."
--Linus, from It's the Great Pumpkin, Charlie Brown
Now, in truth, I do discuss religion and politics with a great many people. Although I did avoid doing so in work situations, back when I "worked" for a living.
However I rarely, if ever, talk about my deep and abiding passion for the Great Pumpkin. It's almost too sacred to utter aloud.
I know you understand where I'm coming from here.