Nothing worse than going to a store with several items on the counter and not have your wallet with you. It happened to me tonight at an Apple store in Palo Alto. Not a good night for me! Interestingly enough, driving without a wallet doesn’t bother me that much. I don’t do it purposely.
The worst thing that happened to me is walking around Tijuana, Mexico without my driver’s license. I took it out of my wallet the night before when I went out in Santa Monica with friends. I grabbed my wallet the next day and we drove down to San Diego to cross the border.
I walked around all day in Tijuana unaware my ID is not in my wallet. Somehow, I walked back in to the country without a hitch. Of course, that was pre 9/11. Security is a lot tighter now.