This is why I don't trust things like email to Apple. Email is a universal thing: whether I'm on my computer, an iDevice (I've owned several), an Android device (I've owned a few), or something entirely different (who knows what the future holds?) iCloud is great for backing up iOS specific things (many apps rely on it for syncing between your devices, etc) but for those things which merely consume "universal" things like mail and photos, I rely on universal solutions.