I had a C64 in my teen years and dreamed of owning the Amiga 1000 as there was a Commodore/Amiga dealer a bike ride away from my house and every Saturday morning I would ride my bike there and stare in awe at the A1000 for hours upon hours. Man in 1985 it WAS THE computer hands down and to this very day I'd throw away every piece of electronics in my house if I had to but never my A1000.
I've used almost all the OS's but always AmigaOS feels like coming home. In my 20's I decided to sell my Amiga 1200 with Blizzard 030 as I needed to use AutoCad for school and alas I had to get my first PC to do so. The regret I had once I sold it was indescribable!
of course I got it back years after...along with other Amiga goodies :-)
If it's about nostalgia, I don't think it is any less valid.
Bernd Schmidt said in his interview that his vision for UAE was narrowly
defined to the specs of the A500, because that's the computer he had,
and that's not a programmer talking.
There has to be merit to the fact that the Amiga is that thing that connects
your present to your past. My first microwave oven does not do that for me.