Added to my enemies list: Goobers who wear their bluetooth wireless headsets when they’re not on the phone. It’s an epidemic. This is worse than the tendency to wear cellphones on the belt.
Consumerism / frugality: Both Colgate and UltraBrite toothpastes are made by Colgate-Palmolive and have nearly identical ingredients, yet UltraBrite is half the price of the equivalent Colgate. I have been a sucker.