Forth is a different language.  It's aged and a little weird.  What's cool about it?  It's a very low-level and minimal language without any automatic memory management.  At the same time, it easily scales to become a very high-level and domain-specic language, much like Lisp.  Compared to C64 Basic, Forth is more attractive in almost every way.  It is alot more fast, memory effective and powerful.