But I hate coding or reading prefix (list) or postfix (rpn, forth, etc) languages. Once wrote a substantial project is Postscript - works fine but note easy on the brain.
Guess it comes from just too much familiarity with infix notation!
After a few of these, you stop designing syntax: you just skip the syntax and directly read ASTs instead of whatever syntax you wasted your time on.
My next language is going to be a FORTH of some type .
But consider that I didn't make lisp-like languages because I didn't find anything suitable.
There were (and still are) lots of nice Lisp implementations when I made my variations over the years.
It's the same with any language created by a single person: we aren't doing it so that we can use it in production (that's a bonus, if possible).