AutoLISP is still my most fluent language, pleasantly surprised to see anything in it on HN. There's something fun about its idiosyncrasies, but I am genuinely so glad for modern IDEs, linters, tooling in just about every other environment. AutoCAD has severely neglected it, despite some large businesses built exclusively upon it.
Still your most fluent - that says something about how the language shaped thinking. The neglect is real; Autodesk clearly wants everyone on .NET, but there's a lot of institutional knowledge and working code out there that just... works. Part of why I built this: preservation. If AutoLISP fades from AutoCAD entirely, at least the workflow can live on in the browser.
I cargo culted my way into AutoLISP in the R12 era knowing nothing about lisp or funtional programming (BASIC and a tiny bit of Pascal was all I'd done by then). Just using notepad without any assists like highlighting matching parentheses and no deeper theoretical knowledge was tough, but I could see vague outlines of a world of mathematical elegance just out of my grasp.
"Vague outlines of mathematical elegance just out of grasp" - that's exactly it. Notepad, no paren matching, just counting brackets by hand. The elegance was there, we just couldn't quite see it yet.