Do you imagine that people who buy a new phone every year smash the old one once they've restored their backup? Or do is it more likely that they pass them on to others via sales or gifting? In which case those perfectly good phones are still perfectly good phones...

And then what happens to the phones those people had? We don't do this with laptops, desktops, or monitors. What makes phones so special?

Actually, yeah, I do do that with laptops and desktops and monitors. My entire family uses laptops that I once owned. And I'm using a laptop (as a server) that my parents once owned. My old monitor is now my nephew's monitor. etc.etc.

I am saying, do you buy the new model of the same laptop or monitor every single year?

Oh, ah, I see your point now. Apologies.

Not every year, no. Laptops are about every other year. Monitors are infrequent, yes.