I never made that switch. The muscle memory of 2 decades of using a software is under appreciated.
For me, it is about preference for what to optimize for.
I love CLI tools that effectively give me the things an IDE would offer such as astgrep for refactoring for example. zoekt with a browser does pretty good indexed searches. fzf can be used to build up almost any useful way of selecting things that you can imagine. So the CLI becomes my IDE.
Hence, I will stick to my piano.
> I consider my vi/vim skills to be extremely minimalist subset, and probably horribly inefficient
Likewise, "I don't configure anything from the default" could be likened to playing an out-of-tune piano because you just can't be bothered. If you genuinely switch machines so often that configuration becomes a burden, sure, stick with the defaults -- but I think it's doing yourself a bit of a disservice if your reason is instead "I don't think it's worth spending time or mental energy on my tools".