I admit I’m obsessed with saving receipts. It’s something I’ve done for decades. If I can get a receipt, I’ll take it. It gets placed in my bill box. At the end of each year, I put that box away in storage. I even get receipts for the simplest things. Over the weekend, my wife and I stopped at a convenience store for bottled water. I paid with my credit card and asked for the receipt. But there was a problem: the cash register ran out of paper. And when they went to replace the paper, none could be found. This store was out of receipt paper. I was shocked…