Switched to iPhone permanently 3 yrs ago and the phones hold up super well. Went from a new 6s (they surprisingly had them new in 2019 still) to an SE 2020 and now on a 13 pro max. Did I need to upgrade that many times no, it was more of a sheer want for new features or in my current case the best battery life. Also software support is superb you’ll get updates for a while and the phone runs like it’s new even after a while. They only ever start to slow down if the battery’s total capacity drops significantly but that can be fixed with a new battery which is cheap.