I used to carry a bottle opener but it had been YEARS since I used it and decided that 99% of the time that there’s bottles that aren’t twist, that it’s at my house and I have to walk further to get my keys than the opener that is attached to my fridge.
And really what you’re doing is peeling the metal back enough to release let air flow into the bottle. Once you get the edge up, the vacuum seal is broken.
Always freaks me out when people use their teeth though.