Earlier quoted context omitted.
My wife actually thinks it is rude to pay with cash or check when people are waiting behind you in line. Cards are the fastest way to pay, you don't even have to sign for purchases under a certain amount.
You don't enter a PIN? That process easily makes it take longer than cash.
Now that being said, we get an SMS on every transaction, and for online transfers, we have two factor authentication using the mobile phone. We can call the bank any time to report a stolen card and would be covered for a fair amount of money depending on the account, as long as you report it within 24 hours as I remember.