I think what @iLemming meant is that she/he doesn’t understand the appeal of having a fancy REPL _UI_ (mostly virtual terminal emulator-based readline implementations) and working with it _directly_ as opposed to sending forms from your editor of choice to a REPL server.

I kind of hold the same opinion. Being more powerful, feature-rich, flexible than readline implementations, editors are, by design, more suited to editing forms. And, I believe, “sending forms from your editor to the REPL” is what the “REPL-driven development” encourages.