Are you? Higher end Android devices can be hooked up to a USB keyboard and an HDMI equipped screen. If Windows 10 switches into desktop mode when docked with a screen, keyboard and mouse (or the phone screen becomes a glorified touchpad) then it will be the computing device I've been waiting for for over a decade. (But it probably won't, because that would cut into their sales figures.)
So, what you are saying is that the idea of One GUI To Rule Them All is a fucking joke; just like the "other side" is saying, right?
This just means your Mobile Device (which is always going to be more resource-starved than even the weakest Desktop) is going to be saddled with a bunch of Desktop GUI-cruft that it may never use, depending on the Application and User's Tastes. Because it ain't just a matter of Start Menu vs. Metro Tiles. It's a whole different paradigm.
And at least Apple is smart enough to know that. There have been some "leaks" from iOS into OS X; but if you look at them, it has been done in a very considered, and generally low-key way, largely to the benefit of the Desktop experience. Not what Redmond is foisting on the world. Simply no comparison. I'm not cheerleading Apple here; I am just saying that you simply cannot just shove a Mobile, Touch-Based UI down the Desktop-User's throat. And having a Mobile Device that has a schizoid UI that flips back and forth??? Yeah, Suzy Homemaker and Joe Sixpack are gonna dig that, yeahrightsure...