If you’re an Android user, but you want to try out iOS 7, you can. Sort of. Someone out there created the jbOS7 theme for Android.
Basically, it makes the Android device look like an iPhone running iOS 7. It runs on Android Jelly Bean. The maker, shmogt, says that it’s “more than just a background image with some icons.” He tried to make it feel as much like iOS 7 as possible. The result is something that actually looks very similar to Apple’s operating system. Even the functionality is as close as possible to iOS 7.
Most Android may not care for iOS, which is why they are using Android (Otherwise, they’d have an iPhone).
Either way, you can check it out here.