I also prefer games that have cross-platform cloud saves so I can play longer sessions on my Xbox or PC and continue from the exact same spot on the Deck when I'm on the go. I think I can finally finish Witcher 3 this time when they added cloud saves, I don't need to have 3 parallel games going on different platforms.
The quick pick up and immediate suspend are the killer features for me. The Spouse Acceptance Factor is pretty good for a device I can play with on the couch and be semi-present. Instead of me taking up the TV or being in my own dark corner playing with my gaming PC.
I've finished more games during this fall on the deck than my PC during the last two years.