I was just like you until a couple weeks ago. No grime in the keyboard, heavy use, took it with me everywhere, used it every day since 2016. (That being said,

I was just like you until a couple weeks ago. No grime in the keyboard, heavy use, took it with me everywhere, used it every day since 2016. (That being said, it was/is in pristine condition--no scratches, dents, or drops.) But one day it just happened. Nothing to provoke it--hadn't been eating over it, hadn't been treating it any rougher than usual. E key started bouncing (repeating). Rarely at first, but it got worse over the course of a week. Canned air didn't fix it--had to ship it out. I can't really say it was a bad experience, though. They handled everything without issue. I walked into the store--no appointment--and they took a look at it immediately. I didn't pay anything despite being out of warranty and without AppleCare. Had it back in my hands a few days later. Personally, I love the feel of Apple's butterfly keys. I like the short travel distance and the satisfying "click" they make. I've had plenty of similar issues with scissor switch keyboards; it's just that they're easier to repair. Pop off the key, give it a good blow, and it's as good as new, though you might end up inhaling some ancient crumbs in the process. Allegedly, that usually doesn't work with butterfly keys, for whatever reason, and they're hard to remove without breaking.