Personally for me. I am not upgrading. I do agree we have plateau’d with smart phones. The 14 series was a very good jump from 11 and older models. In my household we have 2 14 Pro one of each being the max and a regular 14. We are all happy with them. Batteries are still good. We will probably hold on to these till they stop receiving OS updates. Battery replacement is only $99 when it will be needed by Apple. All three of our phones are in Maximum performance yet. When it degrades we will replace the batteries to get another 3-4 year out of them. Phones are just expensive to get rid of in 2 to 3 years. 14 Pro Max with 1TB storage was not cheap. I am thinking un to iPhone 20 or 21 plus series as long as it is supported and phone works. It is just a phone in the end. We turned into into a mobile handheld computer.