[1] https://help.steampowered.com/en/faqs/view/671A-4453-E8D2-32...
[2] https://www.reddit.com/r/SteamDeck/comments/12sgnw7/what_do_...
You could probably get away without the mouse if you're ok with touchpad usage. But YMMV.
Stop imagining. I'm quite literally mooching around in bed posting this from Firefox on a Steam Deck in desktop mode docked to my bedroom TV. This[1] isn't your father's Oldsmobile.
[1] https://store.steampowered.com/steamdeck/#SaleSection_24468
Sure, some might dip into desktop mode to do a bit of browsing, or set up emulators, but nobody is saying "hey, I'll just use this as my daily driver now".
Seriously, the hubris[1][2][3][4][5] of it all.
[1] https://old.reddit.com/r/SteamDeck/comments/12sgnw7/what_do_...
[2] https://old.reddit.com/r/SteamDeck/comments/12sgnw7/what_do_...
[3] https://old.reddit.com/r/SteamDeck/comments/12sgnw7/what_do_...
[4] https://old.reddit.com/r/SteamDeck/comments/12sgnw7/what_do_...
[5] https://old.reddit.com/r/SteamDeck/comments/12sgnw7/what_do_...