It's kind of a cult of Emacs. Richard Stallman uses HHKB, and that's one reason why I think I definitely need to have a HHKB.
Perhaps it's the last 'break' of Stallman this time.
I wonder what's the main keyboard(s) and keyboard usage habit of the new Emacs maintainer John Wiegley.
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https://lists.gnu.org/archive/html/emacs-devel/2015-11/msg00422.html (https://lists.gnu.org/archive/html/emacs-devel/2015-11/msg00422.html)