I got my first Android phone in November of 2009, a Motorola Droid. I was on Verizon, so Android was the only modern OS available. Blackberry and windows mobile couldn't hold a candle to it. I switched to an HD7 shortly after it launched and there were things I missed from Android, not just apps, but things like copy paste, multi tasking, dual cameras, HSPA+ data speeds, and wifi tethering. However, to me the smoothness and stability were worth it. I didn't even like Metro at first but it grew on me. I loved Windows Phone, but had a hard time recommending it because, until mango, feature wise, it wasn't a modern OS. That is why Android got popular. For two years, it was the only full featured, modern OS for someone who wasn't on AT&T or didn't want an iPhone. Now it has name recognition. And honestly, to the end user, Android and it's interface we're more familiar and "Windows like" than any other OS.