I have a 6s and have been reluctant to update as the 6s keeps getting iOS updates. I'm running the iOS 14 beta and it's still very smooth. The battery is bad, but I have a battery case that helps me get through the day. I haven't been tempted by a new iPhone in years but think it's time to update. I'm trying to figure out what exactly has improved since the 6s that has radically changed the iPhone experience. I understand there have been improvements to speed and the camera and the home button has been removed in favor of a new unlocking method, but what else is new that makes the iPhone fundamentally an improved and more modern experience?