"Certain situations"? How is plain listening to music on an iPod a special case? It's the whole purpose why i bought the device in the first place. I don't do anything else than select and album, listen to it, select a new album, listen to it,... and so on. And still the device crashes all the time. This is not a "certain situation", it's a disaster.
The special case is that YOU are having a problem that other people are not. I don't mean the album thing; that's a feature, even if an undesirable one. But the routine crashing is not normal. Many people using 7's music player are not having that problem, so there's *something* different in your case.
The "printed info" was all over the web, detailed videos and walkthroughs on Apple's site months before the release, the beta program producing copious reviews (both positive and negative), everything you needed to know was out there.
Up until the last clause, you're right. But no, that's very clearly and obviously NOT "everything you needed to know." How it works on your device, with your apps and your pattern of usage is absolutely vital to deciding what OS is better, and you cannot get that information with a reasonable level of accuracy from any amount of reading.
The test drive - that's a no, and it's always going to be a no. This is an operating system. Performing the update isn't trivial, promising the user that they can just "try it out" on their device means guaranteeing a safe round trip for all their data, and it also requires the user to actually give the new OS a fair crack and not just freak out at the change after 5 minutes and retreat permanently back to the old version, which helps nobody.
Giving no valid reason whatsoever for its "always going to be a no." Nobody said rolling back an operating system had to be easy. But why,
other than those rooted in the desire itself to force everyone to use the new version, should it be worse than the computer equivalent: wipe the system, install the old OS the same way you would before the new existed, restore data from the last compatible backup?
You try it in a shop, you refuse the update until you're satisfied with the feedback you heard etc.. but when you update it's a one way street and has to be.
I'm sorry, but that it "has to be" is a boldfaced lie, pure and simple. Absolute proof of its falsehood is the two or three days where it was allowed. And you haven't given any reason that's actually worth the typing for WHY people should have take that it will work for them in real life as well as it works on a display device at the store on faith, rather than being able to backtrack (with the loss of a few days' data) if it's unsatisfactory. "Because Apple/developers/anyone at all other than the user himself need you to use the new version" doesn't qualify. Especially given the obvious fact that many of what people here consider bugs will never be fixed, either because they're deliberate or because the underlying problem is squeezing software that demands just a bit too much onto devices that can barely handle it.
And (so far, at least) I love iOS 7.
I can think of two reasons, though, not to allow downgrades. One definite, the other at least plausible, and neither, as far as I can tell, much mentioned. The first is that not cutting off iOS 6 installations in the first place is a very different thing from re-allowing them. If they'd never stopped letting people downgrade, that would have been great, but starting to *now* would be a PR disaster.
The other, I'm far less sure of, but it's Activation Lock. iOS 6 doesn't have it. If a stolen device with 7 is locked, and if it were possible to install 6, would doing so bypass the protection? If so, that would make what is probably 7's most valuable practical feature absolutely worthless on everything but the iPhone 5C and 5S. THAT would be a truly legitimate reason not to allow downgrading.