What. prompted you to go from Apple to Android?
Lots of things.
-iOS was getting stale for me. The update from ICS to JB is what sold me. I think at that point Google proved that android could be just as smooth and fast as iOS and is capable of so much more.
-The larger screens with the same or higher PPI than the "retina" displays drew me in.
-The nerd in me! I was finding that the iPhone just wasnt as usable for me if it wasnt jailbroken. I was noticing, and have now confirmed, that almost all of those tweeks I had installed through Cydia came stock or could be added without root on Android. I am unlocked and rooted now though and just flashed my first kernel last night.
-The pace at which android is moving is incredible. You don't get that with Apple.
I came from the 3GS and then the 4S and loved them both. I was, and still am, an Apple fan. But I think it was time for me to try the other side. I couldn't just sit on one side of the fence. I also can't say that I would never go back. Depending on what Johny Ive does with iOS over the next couple of years, I may go back. For now though, I'm here to stay. I love android. I love that I have experience with both sides now and feel I can offer better advice to people and be less biased.
TL;DR Time for change
Jesse