While Google and Apple ecosystems are competing, they are pretty different. If one is really entrenched in Apple's ecosystem, jumping to the Google ecosystem might be overwhelming at first. Likely though, it would be the same for anyone moving the other way as well!
Here's a good "jumping ship" article:
Jumping Ship
The way I see it, there are a few stumbling blocks one will have. And I have to add that Apple does this purposely to make it difficult to switch. While other ecosystems champion cross platform apps, Apple does not make theirs cross platform compatible. So the "cloud" as they call it, iTunes, Facetime and iMessage all are purposely made only for the Apple ecosystem. Compare that to most other clouds, open source and freeware music managers, cross platform video chat apps like Google Talk, Tango and Skype and a host of other messaging platforms and one begins to see how archaic Apple's practices are.
iTunes - fortunately there's ways around iTunes. Whether you ditch it completely or use something else, its doable. Solutions include an almost carbon copy of iTunes called "DoubleTwist" which not only has PC/Mac software that does most of the things iTunes does (including a near identical interface) it also has a matching media player in the Android app store as well as optional sync over wifi. DoubleTwist can import your playlists and media right out of iTunes too.
Now if you want to keep using iTunes and sync to your Android device, iSyncr is a great app to do just that. Select your playlists and away you go! Its available on the Google Play store.
Additionally, there are a host of other media players for Android including my favorite and quite possibly the world's best music player, PowerAMP. Pure awesomeness!
Facetime - Replacements for this are numerous and cross platform. Tango and Skype are my two favorites with Tango edging out Skype only because of its ability to do push style calls instead of launching an app to run in the background like Skype. Video quality it pretty darn good and oh yeah, can be used over 3G/4G/LTE/Wifi.
Cloud - GMail, Google Music, and just about any other major platform has cross platform availability. Contacts and settings are automatically stored in the cloud with any Android phone and have been for years.
Bottom line is that you took the jump into Apple's ecosystem and got locked in. If thinking about Android, think of it as "all in" on an open ecosystem of apps and services from any cross platform vendor and then if you ever want to switch to another platform in the future, its not a big deal as all your favorite apps (with your data) will already be there. That's the right way. Not the Apple way
