The GUI is what it is all about, I can't make you understand that, it is how we interact with our computers not what is under the hood. What attracted me to the Mac at first was the interface, I did not understand or care what was under the hood. As I used the Mac longer I learned more of the underhood stuff, but the GUI is what it is all about, that is what I see and feel, of course I want a stable, robust, safe, OS and I have had that for the most part with Mac OS, but that is not what has keep me using the Mac for all these years, it is the interface, somehow the Mac interface works in a way that works for me, that Windows, Next, VisiOn, Gem, Atari ST, Amiga or OS/2 have never worked for me (OS/2 actually came pretty close).
The Mac interface just makes sense at least to me, but turning my Mac into a phone OS does not work for me and if Apple ever does change the MacOS so that it literally becomes iOS that will be when I get off the Apple train. Remember the applications and how they run mirrors the GUI, if you want all your apps to look like iphone apps then knock yourself out.