I'm currently (mostly) living in Emacs with a few shell buffers and using gptel to interact with Anthropic, Google, and Open Ai LLMs, as well as running smaller LLMs locally. This is after decades of vi, then vim, then Emacs. Still a neophyte though given the enormity of the Emacs "ecosystem". One critical thing about Emacs: Running an Emacs daemon (for days or weeks between restarts) takes things to an entirely different level. It becomes a useful operating system. The key for me was moving from mutt to mu4e for email. Once I moved my email management into Emacs things improved dramatically, productivity-wise. Oh, and what made me switch to Emacs from Vim in the first place was org-mode.