I also have iPhone 6, so I'm kinda hesistant.. Ever since the iOS 6 update rendered my iPhone 4 completely unusable many years ago, I have always been hesitant

I also have iPhone 6, so I'm kinda hesistant.. Ever since the iOS 6 update rendered my iPhone 4 completely unusable many years ago, I have always been hesitant to upgrade any of my iPhones to the latest iOS, and wait until I have confirmation that upgrade was not "planned obsolescence by design". The problem with iOS update is that it is permanent and not downgrade-able.