Same reason people write Lisps instead of working with Lisp: It's fun, but not all that useful when you are finished. In the modern world, you can't really do

Same reason people write Lisps instead of working with Lisp: It's fun, but not all that useful when you are finished. In the modern world, you can't really do much other than simple demos without encryption and networking and those things are much harder to write than a Forth system.