I have a decent but aging gaming PC, but that desk doubles as my office now, so I don't always feel like doubling down my time in there after work.
Now I can game wherever.
Not only is the SteamDeck nice, SteamInput is amazing, no more unchangeable bindings.
Text heavy games aren't always the best at that resolution, but otherwise I'd say I've gamed more on it then on my 3080.
The opening scene of Subnautica 2 was a nice experience to have on a flight.
I'm in a similar situation. Streaming fron the PC to the deck is fantastic. Games the Deck struggles with are suddenly playable. Intense games that would normally ramp up the fan and only get a couple of hours of battery are suddenly easy for the Deck to handle. I highly recommend it.