[habitue]

I mean, this pretty much describes rust. Its merits speak for themselves, and people who were skeptical of it and try it very quickly find out the language is really well designed and pleasant to use (once you get used to the borrow checker).

There are a ton of niche languages that have very enthusiastic fanbases, but they don't get the same snowball effect rust has gotten because it's a great language on so many dimensions.