That's really gonna come down to your workflow and use cases. For me, the Lisp is a bit more welcoming than VimScript for me. It's much easier to test out a small snippet of something in-buffer which might grow into something else.

But, putting Lisp aside, going through the growing pains was worth it for me because of org-mode. I'm certain Vim might have something similar but the proper `org` package is definitely on my list of benefits. I have an org-file that tracks my time and generates invoices with a click of a button. Another one documents all the API calls in another project with interactive areas, thanks to org-babel. I think being able to craft documents like this is invaluable but again, it's gonna come down to how you do work and what makes you happy/efficient.