Going back to iOS 6 would be odd.
When iOS 7 was first released for download and installation, and once I had installed it, I was totally against it.
I wanted iOS 6 back desperately. The simplicity and elegance of iOS 6 was unbelievable when you compared it to all of iOS 7's new features at the time.
But looking back on it, I realized I just wasn't very used to all of iOS 7's UI changes and such. And using it now, with all of its features it has included, it's opened up a whole world of possibility for the devices it can be run on.
Yes, I'll agree with most of the people here that the functionality of iOS 6 was unbelievable, simple and easy to use. To counter, I think iOS 7 is easy to use in its own ways.
Once Apple fixes the the vast bugs amount that are with iOS 7, it will grown on many more people.
All in all, iOS 7 is the way of the future and Apple is not turning back, so you might as well do you're best to cope with the new changes, because they are here to stay.