Well, i can understand a bit to this user, i have a mac mini g4 too, its a good machine i think, but osx for me is not the magical experience of OS that some people talk about, osx come with a good looking desktop but is too easy or hard using the unix-like-terminal... i dont feel the amiga style with this OS, no scene or a good amiga like community, just a "think different" slogan a little bit elitist, maybe im wrong but is my opinion.
Im waiting for morphos in the macmini ppc is the hope to this machine.