Two decades professionally here too (and nearly three in terms of programming as a whole), and I still use ‘em. Reviewing and adjusting, they make for quite a good experience even in agent-first development with the various nice extensions.

Also I still have to write code by hand, because there’s a whole bunch of edits and adjustments that I’m far faster at shrug

Then you are probably not interested in this work at all. It is meant to develop Lisp­—a language whose primary advantage in 2026 is ergonomics to humans, particularly a certain kind of human. If you're doing 100% agentic development, that advantage disappears and you might as well use something popular and statically typed, like Rust or TypeScript.

Same. It's an awkward time to develop a new IDE.