Yesterday I got one of those phone calls you don't want. My bank notified me that my debit card was being locked because of a potential data skimming, and that I'd have to visit my local branch to get it unlocked and to change my PIN number. Since I didn't find out until after local branch hours had ended I was stuck with a grand total of 13 bucks to my name that happened to be in my pocket. In reality I wasn't really broke since I do have a credit card with another bank, but I only use that card for certain things.
This is the kind of thing that makes appreciate cash. When you spend actual, physical money your entire savings aren't at risk, just whatever cash you hand over. You're also more likely to think about what you're spending, instead of simply pressing a button and worrying about it later, like at the end of the month when your bank statement comes, and you suddenly realise that you've spend a lot more money than you thought. It's probably a good idea to leave the card in your pocket except for more pricey things, which you're likely to buy at places much less likely to be the site of a skimming attempt, and pay for the small stuff with paper money.