Voted for entirely docked. I played Mario Kart in handheld mode a little when I first got it but ever since then... nope. I'm really not a fan of Switch 2 as a handheld, even just around the house; it's too big, too heavy, the joycon's sticks and buttons are lame, the battery runs out too fast and I don't care for the screen.
I like playing modern games on my big OLED tv screen with good HDR and a pro controller. Handheld mode is for my classic console/arcade games, all of which I moved back over to my Switch OLED that I vastly prefer as a portable and where I have good controller parts attached.







