Windows Metro UI was fantastic. It was leagues better than Android for sure. It was a very different take than iOS as well.

Honestly, it's a huge loss for all of us. I always felt like the U.S. government should have blocked Google from making Android "free." It killed the market for all non-iOS operating systems. We'd have a much richer world if all horizontally integrated OSes had to charge a licensing fee, instead of using a search monopoly to kill competition in other markets (and then using said free OS to further extend their search monopoly).

I also blame Google for killing Blackberry. If Google is blocked from using its search monopoly to make Android free, imagine the world we would have.

Android, for many years, was actively bad, but it was also a free OS that phone companies could grab. And the rest is history.