Why am I here?

Simple.

PHP and functional programming yield rapid idea generation. Although other languages like Lisp are far superior (ultimately), PHP was designed for the web. Tikiwiki captured my attention because it offers possibilities not found in any other content engine and I've tried them all.

Is TikiWiki the best there is?

I doubt that, but it could be if the developers maintain an open mind and share the vision without any political agenda. Ego has no place in open-source development. Leadership is important in any project, but a carrot drives progress far better then a stick.