Touch typists love the efficiency of easy control of things without resorting to cursor keys or a mouse - the same thing vi and emacs fans enjoy but in a different way. Being able to do your documentation without switching brain gears is useful, too. Programmers that write were especially fond of WordStar since it had a non-document mode and was often the best text editor you had available for writing code. This is a modern interpretation of our old friend. Thanks to an open-source clone, WordTsar, you may not have to. Martin, apparently are still refusing to give it up.
At one time, it was ubiquitous, and many authors had a hard time giving it up. Wordstar was the word processor that helped sell the personal computer.
