Bought a PS5 solely for Demon's Souls remake. That was the killer app for me. One of my favorite games remade with next gen graphics were enough for me to pull the trigger. But I was pretty tired of the PS4 by the end. It felt slow and old. DS4 controller was crap. The PS5 was just a blessing. Faster, quieter, no loading. I went all in on accessories, extra controller, charging station, pulse headset, 4K screen. The gaming experience is night and day now. Huge upgrade from PS4. And the library of games have so far been awesome.
Ratchet and Clank, Returnal, Death Stranding, FF 7, Demon's Souls, Forbidden West, GoW Ragnarok, Miles Morales, Ghostwire Tokyo etc. And then you have the great PS4 BC which made my existing catalog of games play and look even better. I can't even imagine going back to the awful PS4.