Bitcoin was created to be a universal currency and lightning makes it possible to make completely P2P micro-transactions for a few pennies paid in fees.
Now let's assume for the sake of this poll that you could now spend your bitcoin that is under your control on your wallet, anywhere, by just tapping your bitcoin wallet (hardware or mobile) against an existing credit card machine and you are able to pay with bitcoin over lightning.
What I'm trying to understand and defend against a lot of the mass skeptics is this exact question - Would you use bitcoin as a currency if it was possible?
I believe, irrespective of the value, anybody that held bitcoin before 2017 would be in a place to spend it.
At first I want to mention that if I have option to pay with my card, then why not? They even offer me some cashbacks in various places, it's pretty easy, just take card from pocket, put it on terminal and that's all, transaction is done.
Btw if there is option of bitcoin and I forgot to fill my bank's account or don't have money on that at the moment but have some bitcoins, then I would pay with it. Don't take it wrongly but bitcoin payments isn't as comfortable as payments made by credit card. But if we talk about high transactions, of course I'll use bitcoin because it's fast and cheap, especially with lightning network.