Staying with iOS 6 was only ever a temporary option, Apple made it so. They are the only distributors of their OS and they completely cut off supply the moment iOS 7 started shipping. Unlike OS X, you cant just install an older version, even if you find it online. Older versions wont get any support and they wont get any bug fixes, the FaceTime issue notwithstanding. Even if you are strongly against iOS 7, resisting the update was a lost cause from the start and never a serious option.
To me, iOS 7 represents more than just an update or a cosmetic change. It marks a shift in Apples attitude or philosophy towards design. iOS 7 is a departure from a lot of things that I not only liked about the iPhone, but also about my Mac. It wasnt just the admittedly overused skeuomorphs, but the meticulous attention to detail and the playfulness. Buttons that looked really touch-inducing, toggles that would snap into position, menubars and action menus that would provide a solid structure and a very intuitive and functional UI that always delivered. These things are just not really there anymore. A lot of it is now plain white, many buttons are textual or unicolour rectangles, the structure is less apparent. I get that its a more modern-looking and, to some, more visually appealing design, but I think that this particular design just doesnt have that little something previous versions had.
I really want to like iOS 7, but it wont work with me. I dont complain about iOS 7 because I care about iOS 6, I complain because I care about the path Apple is taking with design. I want to continue using Apple products, but Im getting anxious that Apple is not going to appeal to me anymore. An iPhone can be substituted, the competition has become incredible. In fact, I already did. But I wont be able to substitute my Mac. Thats the point at which iOS 7 becomes the most concerning to me: it will leave a mark on OS X too.