Previous phones: iPhone 4s, 5, 5s.

I recently switched to a Nexus 5. First I bought a Nexus 7 to play around Android and it turned out I liked it very much. I decided to switch because many apps I frequently use (Authenticator, Calendar, Chrome, Gmail, Docs, Drive, Google+, Keep, Hangouts, Maps, Play Music, Search, Youtube, etc.) are made by Google and I feel like I'm getting a better experience on Android. I also really enjoy the fact that I can install Play Store apps directly from my desktop web browser. And from a hardware standpoint, I much prefer the larger screen of the Nexus 5.