IMHO I have allways considered that the true Amiga spirit was in the combination of OS and hardware. I grinned as pc owners failed to get software working on generic boxes, knowing full well that my latest software would work without a hitch because it was made for my exact chipset. I laughed as I plugged in new hardware and it worked first time instead of shouting out IRQ conflicts.
The Amiga was console and computer, toy and tool in one.
To me now, SAM is the most exciting hardware in some ways, but it's not even got an Amiga-ish OS yet.
I don't see how anyone can moan about so called "alternative" Amiga OS's however, I see it like this: If MorphOS and AROS have advantages over OS4 then that only helps apply pressure to improve OS4, so it helps us all.
Oh, In case anyone missed it, our "official" OS should be OS5 should it not? Shame that there is no version for Amiga hardware, lol. Space invaders anyone?