Popularity is more nuanced than a simple number. Android phones cover a much broader price range than iOS or Windows phones so people who might otherwise have chosen an iPhone are forced to choose a cheaper Android phone, which doesn't really count as a "vote" for Android. Choice of phone also depends on a person's cell phone provider. For a long time iPhones weren't available on networks other than AT&T's.
You do understand that this choice that you speak of is simply a strength of the Android platform? You can't just push that aside just to maintain your own world view. Android is the most popular mobile operating system right now - it might or might not be the best or most valuable, but it IS the most popular.
