iPhone 14 to 17 is still a solid step up. +10 hours battery. 120hz display. 48mp cameras vs 12, way better front camera... and USB-C. But if this is too minor a bump for you then just hold onto the 14? One of the great things about these recent phones is how long they last if looked after. I'm getting 17 after skipping 6 generations with my XR and it's been great this whole time. Only really upgrading now due to crappy battery life and no longer getting the latest OS versions, which I need to run. And with 6 generations skipped the step up seems major.