Frankly what the H... where they thinking? It made absolutely no sense at all. I still don't understand who and why it was approved. Nobody I know, likes this whole metro/modern UI thing on desktop, NONE. X years later I'll still be complaining about this fiasco, windows 10 or not, it wasted the time and the energy of so many people I can't believe it.
Death threats are obviously unacceptable but I hope someday someone write a blog post or a book about that single stuff and the process that led to that insane mistake. Was it Balmer? Synofsky? someone else? I don't know but for god sake, people work on Windows like 9 hours a day, you can't change stuff just because it looks cool on a tablet...