I mostly use it for hobby projects. For example:

• lemmy alternative - I'm using Iroh and Tauri to create a distributed lemmy-like application (mostly wanted an excuse to play with async Rust)
• Godot game projects - GDScript for most things, Rust for more intense processing - not a fan of C++, and everything else is similarly awkward, so picked Rust because I like it
• small web projects - I built a game server that did interesting things with different socket types (websockets, TCP, and UDP); wanted correctness since I'm doing a lot of async stuff; I've used Go for this kind of thing in the past, but I don't like some of the footguns it has

I'd love to use it at work, but my team is mostly Python-centric and it's working well enough for us.