I am still shooting the majority of my personal images with my old iPhone 6s. I keep looking at the newer iPhone models but the cost versus benefit ratio is hard to overcome.
I considered switching to a Google Pixel 3 phone as the camera is reportedly slightly better. Everything is trade-offs though. I have spent a lot of time and money with the various iPhone apps, and to switch to an Android platform would mean giving up the Hipstamatic App. That alone is a huge issue.
I will still keep looking. If I had not lost the lenses for my iPro Lens system and the case had not begun to crack there would be no question about keeping the current phone. As the phone models have moved on, so have the lens options, To replace the add-on lenses means switching to a new set of lenses by Moment. They do not make anything that works with the iPhone 6s that is still available. Instead, I would need a 6s Plus or newer.