Man, I make more than enough to replace my phone every year if I wanted, but I’m not as wasteful as you apparently. I used my iPhone 6s until the XS released, and I’ll use my XS for a couple years more at least. I’d honestly keep using it forever, batteries are cheap and I repaired electronics for a living so I can do it myself, but eventually they’ll stop letting me open apps on it like they did my 6s, essentially forcing me to replace a perfectly functional device.