Well, all the points you make are good ones and valid, however I doubt very much that by emulating the Amiga any PC user is going to rush out and buy IBrowse2.4 or the latest FryingPan, TurboPrint or Pagestream.
Do you think an Amiga owner with a UAE laptop is going to rush out and buy the excellent Hollywood multimedia package if there's already a dusty old copy of Powerpoint already bundled with the Windows install?
UAE is doing nobody any favours in my opinion and the frequent reports of things going wrong, apps/games/demos not working properly doesn't do the legacy any good either.
Admittedly running Workbench, DOpus and my favourite utilities on a laptop is a wonderful, tempting idea... but because things are so shaky in terms of new AmigaOS revisions and new AmigaOne machines the emulation scene could well be the death sentance.
"Need is 9/10ths of Invention" or whatever they say... so do we NEED a new Amiga, new apps if the whole WinXP catalogue is just a window behind Workbench? You eliminate all the cool, native video capability, all the super-optimised hardware banging demos, all the gadgets and gizmos that made the Amigas so cool and you're left with a zombified skeleton running RTG apps on a 3GHz 68020!
What about PowerPC software anyway...
:-D