Ain’t has been around since 1749, with an’t and in’t preceding it. It seems to have always been associated with the common people, and familiar/colloquial talk. Dickens used it a lot for that reason.

Aren’t to an’t makes perfect sense among people who don’t pronounce their rs like certain Brits (non-rhotic).

And isn’t to in’t, and haven’t/hasn’t to hasn’t are certainly no more difficult elisions to understand than Worcestershire or Cholmondly, although those have kept their spelling because they’re names.

https://en.wikipedia.org/wiki/Ain't

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Nope, my area is in the US, where it’s guns by a long shot.

Upvoting this for the replies

But autocomplete just gave us “appreciations” when you meant to type “abbreviations,” so you still gotta pay attention.

This is why my alarm is a radio set to NPR. You still feel like you’re gonna die, but at least there’s someone telling you why.