I've switched to Zed twice. The first time didn't take.
That attempt was casual — I was checking it out, not committing. A few things bounced me off: I didn't know its quick-fix equivalent was behind command-period, so for a while I thought it just didn't have quick fixes. My custom VS Code theme didn't port well and I didn't like Zed's built-in themes. The extension marketplace was thin. So I went back to VS Code, where everything was where I left it, and didn't think much of it.
The second attempt stuck. The missing pieces had filled in, and this time I got my theme customized to work with it. What sold me was the agent experience — it's genuinely good — plus git integration that lets me commit without leaving the editor, which was one of the things I liked most in VS Code. Now I use Zed every day and I've deleted VS Code completely.
The other reason I'm interested is GPUI, the Rust UI framework Zed is built on. It's fast, its styling syntax reads like Tailwind, and Zed itself is the proof it works in production. I'd like to build apps with it at some point — using Zed daily is my way of watching what the framework can do.