I have an early 2015 Macbook Pro that I really like. And an iPhone 6 (the normal one, not the big one). I have no incentive to upgrade either one. If my phone was a 5, I would consider a 6 or 7 but there is no compelling reason for me to upgrade either item at this point.
I’ve got a 5S and it’s still going strong. I intentionally stay behind the curve to keep the cost down. Apple fan from way back so that’s what I buy and use, but no need to keep the latest and greatest. It works for a long time and I use it until it doesn’t.