That's the reason I never upgrade to a new iOS unless it's out 6 months after all the bugs are ironed out and all the rants are known. People who did, screwed by Apple. From what I know, it'll be difficult to downgrade.
I love Apple's design. But sometimes they went over too much emphasizing design over endurance. My mbp charger was so flimsy. I think it was designed to break when it's more than a year old. I'm on my third one starting last week.