Ok, and why that? I.e. you are explaining the answer with the question. In particular, I want to understand the motivation why people buy into that.
When i first tried OS4 (and subsequently MorphOS) that was my reaction - frankly i couldn't see the appeal. Fewer applications, and not much patching (like i was expecting after OS3.x).
On top of that, no esoteric hardware to collect, and not much 'mystery' to exploring its capabilities - where's the 'Amiga' in plugging in a pci card, having rtg already available, and not having to sacrifice chickens or set cryptic env-vars and tooltypes?
I went back to OS3.9 and Amiga hardware.
Eventually i realisedi was switching onthe a4000t less and less, until it didn't even get unpacked after a house move. A couple of minor issues never got resolved which made it even less fun, and i grew wary of powering up £2000+ worth of ageing equipment every time which could easily break down and be worth near-nothing.
I realised i wanted to continue using my Amigas, but without the headaches and the financial roulette wheel of ageing hardware already running near to its limit and still not-quite-achieving. With a csppc/a4000t/rtg/usb/etc...there was nothing left to upgrade.
MorphOS, released on the mac-mini, offered the ideal choice: fast OS, in active development, fast cheap hardware that is easily replaceable, no hardware mess to maintain/troubleshoot,maximum backwards compatibility (although inow use very few 68k apps anyway due to more recent, better quality, native replacements/versions), and a large overlap in the venn diagrams of user base.
One morething is that it's not just the OS and applications, but also the community that is a common between Amiga and MorphOS (and OS4.x). Most of the people who helped me get the most out of the Amiga are the same people who help get the most out of MorphOS.