WORDZ OR WORDS

Why spell "words" with a "z" instead of a traditional "s"?  When you spell wordz in its usual way with the s it denotes a set or fixed way of thinking. It perpetuates the notion that words that have been spelled or defined a certain way must remain that way. When in fact this website shows the opposite. We have the ability to define or redefine wordz as we see fit and as such can re-spell them too:)