I think the journey of a Lisper inevitably ends up with realizing that Common Lisp is not an acceptable Lisp. Then you start searching for an acceptable Lisp. You look at Tcl, at Prolog, Io, Rebol, and Icon; you learn Shen, try Scheme and Racket, appreciate Smalltalk and Self and Slate, wrap your head around Forth and Joy and Factor… and the whole time you write Common Lisp. Because there is no acceptable Lisp.