I used to be able to see things in the distance just fine without corrective lenses even though I've been slightly near-sighted for the last 15+ years. I've never had problems with the license plate of the car in front of me. I've never had problems with menus on the wall of a café or street signs or my bus number from further away.
But lately, I've felt like I need to get closer to see things. I can't read the bus number and route label until it's almost at the intersection just before my stop. I used to be able to see it when it was still blocks away. And I've also started feeling like I really should wear them when I'm driving.
My glasses are quickly becoming something I need now. They're no longer just a random accessory that I can put on or take off on a whim anymore.