Just about everyday, I see people fumble through self-checkout lines. I watch as they tap around the screen, try to figure out which payment option to select, fumble with their cards or cash, maybe wait for change, then fumble around with the purse or wallet before gathering their stuff and leaving.
Me, I scan my items, hit total, double click the button on my Apple Watch to trigger Apple Pay, wave my watch in front of the reader, then collect my receipt. No fumbling around with cash, cards, wallets, or purses. This doesn’t even touch on pandemic related issues.