Imagine this for a second:

You are with your friends who are fellow bitcoiners, you walk into a coffee shop or pub and you go to order, they ask if you want to pay with Lightning and you say yes, you just tap an nfc card against the reader that's connected to your wallet or scan a qr code, and boom. You have paid and none of your personal info is sent to any third party.

This is how I envision the future.