I think you don't give enough credit to someone who would choose a windows tablet over iOS. It doesn't take *that* much extra intelligence to understand how to use a windows tablet, it's always funny to me just how much iOS users downgrade themselves in heralding how "simple" iOS is, jeez. Enough with this simple crap, I need to get work done not browse pictures or watch movies which ANY tablet can do with ease.
Once again, when I pick up a windows tablet I don't feel stupid, if anything when I pick up an ipad I feel VERY stupid. Basic computer functions we have grown accustomed to over the last 20+ years suddenly don't work on the ipad because it's "simple". Nah, give me a computer, not a toy any day of the week. And for those who only want a toy, Windows can be a toy OS just as well as iOS, this is where I get confused why iOS is simpler when it's really not.
Metro is very much growing on me. Initially I despised it, but after 8.1 came out and I spent a lot more time with it I am now really liking it. Initially I spent 99% of my time on the desktop, but now I say I spend 50/50. Especially after the changes they made to IE11. Live tiles IMO are genius, they are sort of like streamlined Android widgets, which always seemed extremely bulky and gaudy to me. Honestly my only complaint about Metro at this point is that the Start screen still does not make sense until they allow folders or some way to organize it.
I do, however, completely agree with windows diluted itself stupidly with RT, and they are paying the price for it. Desktop versus Metro not so much for a couple of reasons, 1) Most people know what a desktop is, with windows being the primary OS for the vast majority for years and years now. The desktop/Metro paradigm is something MS has to deal with, it can't throw out the hundreds of thousands of legacy windows programs, but at the same time it has to shift to something modern and mobile. They were smart in not splitting the market in terms of OS, which is why it baffles me that they did split the market in terms of hardware. But the metro/desktop paradigm is something we have to accept as a growing pain, it's the only way to transition traditional windows to a mobile arena.