My family is excited for it simply because of the hand-me-down supply chain - someone gets a new phone, someone else a few hops down gets a gently used iPhone X and we donate/sell a still functional iPhone6s.
Meant to mention this in my comment. Oftentimes when I feel compelled to upgrade sooner than I need to, I know that someone in my family or community will benefit from getting the device I no longer need. Often much more, maybe for much longer, than I’ll benefit from a purely as-needed upgrade formula.
