For those that are applauding Apple's campaign to force users onto iOS 7 (and, by extension OS X Mavericks; as they're being relatively more aggressive than usual there too), consider a few things:
(1) Your opinion isn't the only opinion out there: It's awesome that you like iOS 7 and are gung-ho for the change; but there are those that, for whatever reason, prefer the earlier OS. And on literally EVERY OTHER COMPUTING PLATFORM OUT THERE (except for maybe Android), YOU HAVE THE FREEDOM TO NOT UPGRADE. Upgrading should be a choice, not a mandate.
(2) iOS 6 was substantially more stable and refined than iOS 7.
(3) iOS 7 really does look horrible on the two remaining devices that support it but lack a retina display, namely the iPad 2 and the first generation iPad mini. Personally, I'd say it looks ugly on just about anything but the iPad Air on which it somehow looks gorgeous.
(4) There were features from iOS 6 that were cut from iOS 7 and people did like/use them. Posting to Facebook straight from the Notification Center comes to mind.
(5) The Notifications Bar has become total nonsense.
(6) iOS 7, like all new versions of iOS, makes the devices we own that DIDN'T ship with iOS 7 slower. iOS 7.1 works harder than any iOS x.1 update ever has to help fix this, but it still falls short of performance on 6.1.3.
(7) No one is invalidating your love of iOS 7 by sticking with iOS 6. And yes, there are those (myself included) that would love to be able to still use FaceTime on devices intentionally held back at 6.1.3. Luckily, I have devices on 7.1.1 so I can at least still use FaceTime, but the fact that I can't on the devices that have the hardware for it but are on iOS 6 is lame.
That all being said, there is no real good reason for this push to get everyone on the same iOS version now as opposed to during previous years (for iOS 5 users during the reign of iOS 6, for example) other than publicly invalidating Scott Forestall's influence in the name of Jony Ive's brilliance. What a waste. Reward the 7 adopters for doing so; put the 6 users on life support for another year until using iOS 6 NATURALLY becomes like using an iOS 5 device today.
I understand why users are staying with iOS 6 due to overall smoothness issues on older devices that can't hand it well, that part is fine.
What I cannot stand however, are the people who don't upgrade specifically because of the way it looks.
People need to understand iOS 7 is Apples future with their mobile devices. And if they can't upgrade just because of looks, then it's time to find a new device other than any iDevices.
I can't say that those who are having trouble running iOS 7 on older devices should upgrade, that'd be ignorant. All on the exception of the people running age-old iDevices, such as the iPad 1 and iPhone 3GS that expect constant updates for their products.