People also glower and complain when you play perfect strategy at blackjack ... most people are utter shit at odds and statistics in a distracting environment like a casino.

My strategy used to only play perfect blackjack strategy at the very rare $5 or more typically $10 table. But it's not even fun when people get pissy about when they think you "messed up the cards." I've tried to explain and realized not even worth your breath.