(I also have fond memories of Think C and then Metrowerks, back in the day. A lot of us used them at Apple, instead of the official MPW.)

This brings up some other advantages of text editors versus IDEs, within my limited experience:

* More rapid support for more languages and syntaxes

* Many of the IDEs just feel sluggish. (Yes, Atom can get that way with large files, large numbers of files, or too many plugins.)

* Xcode in particular kept crashing on me last time I used it for Swift.