Because I generally travel within the UK, it's rare for me not to have an internet connection so to be honest I've not really cared for a SD card for a fair while now. I understand in places like the US / Aussieland they're a godsend to some but I'm fairly ambivalent on the subject now.
And having a ridiculous amount of storage on tap from a couple of NAS's accessible via Tailscale, and my last three phones having between 256GB-512GB internal storage SD cards are pretty much relegated to other devices like my drone/GoPro etc. edit: I suppose another thing that fills the void for me if I do need extra storage on my phone is I can just plug one of these into the USB port from my keyring, and I've then got unlimited replaceable storage?
Don't get me wrong, I think it's stupid doing away with it and other things like IR blasters / headphone jacks and, more irritating to me? Notification LED's. My Nexus One had one, my Mi A1 and Cubot had one but I can never understand why they ain't a standard thing across the board.
My backup phone / last daily driver had one, and I did use a SD card in it simply for another place to backup my DCIM folder as part of my 3.2.1 backup, but I did always wonder why I bothered because if I did lose the phone the SD card goes with it, making it pretty moot.
Still, I am of the notion that there's never enough backups.