What would convince you to give up iOS in favor of another mobile platform?

Android has already surpassed the iOS platform in terms of market share and will soon surpass Apple even in terms of the number of applications available in virtual stores. There are so many terminals with the Android operating system that you don't even know what to choose, but Apple has a very clear and well-structured offer that currently attracts many customers. iOS is far from perfect, it has many shortcomings, it is considered a closed system and for some the iOS imperfections were a determining reason in terms of changing the platform.

Of course, Android OS is not the only option, there is Blackberry OS, Windows Phone 7, WebOS, Symbian, MeeGo, there are a multitude of platforms, but what would convince you to give up an iDevice. Could it be the restrictions imposed by Apple, the lack of flash, the lack of possibility to customize the terminal, the lack of functions? I for one would not give up an iDevice, I would possibly buy another terminal, but I could not give up the iOS platform at the moment. What would convince you to give up the iOS platform in favor of another one?