I use JOE, a WordStar/Borland-esque editor that is heavy on the Ctrl key, purely out of familiarity with the interface. However I also grew up typing on an Apple //e, on which Ctrl is where Caps Lock is these days, and I have reconfigured all my keyboards since to have Ctrl where Caps Lock is. This has the nice side effect of alleviating the thumb-under-palm problem that the modern Ctrl position creates.