alt Hacker News> The killer feature used to be the REPL.
The killer (hah!) feature is arguably its homoiconicity, allowing to modify the language easily within itself ("macros"). This has the obvious advantage that you can add missing features (usually) easily yourself; and exactly that causes headaches for those tasked with maintaining other people's code.
> Nowadays with LLMs writing all the code
Oh, you came all the way from the future and that's what you bring us?
I never said I liked the future, but it is what it is.
If you're building products without LLMs today you're going to get outcompeted by people who do, and can iterate faster. I have written a fair bit of lisp and when it isn't refusing to fix security bugs because openai are cowards, 5.6-Sol can do in hours what would take me days.