I have iPhone 11 and I still don't think it is worth upgrading to 14 or 14Pro yet. I consider myself tech savvy person but I don't see a point to buy a new phone if my current phone takes good enough pics for myself and my family and friends to enjoy. Also if the speed of browsing web and opening and using apps is still good enough then what's the point of buying a new phone and polluting environment? As I see it, the latest iPhones are capable of at least 5 years of use and only may need to do is replace the battery once in that life span and I am happy with this approach.
I switched to 13 pro last year, and gave the 11 pro to my girlfriend.
There is a significant difference in cameras between the 11 and 13 - especially during the night photos. To the point where, in our case, I often need to tell my gf to use my camera for a shot when we’re together, because it will
be so much better.
If you take a lot of photos then for this reason alone it’s worth to upgrade imho.
One justification that I can see is the trade in values. Here in the US, you can get a "free" iPhone if you're on a specific plan. Might as well take it if you already have the plan.
How are you able to make your battery last so long? I have an iPhone 12, and up until 6 months ago the battery was easily making it through the end of the day, but now with the same usage pattern I’m charging by noon.