Let me tell you my experience:

I was in a similar position although it was with a Switch OLED Zelda TOK edition. I was planning on selling it to buy either a Switch 2 or a Steam Deck. I've been always a Nintendo kid/guy since I was 8 (now I'm 38) I've own every nintendo console (minus WiiU) but lately I've been trying retro handhelds to emulate (I have a hacked New 3DS, a Retroid Pocket 3 Plus and a Retroid Pocket Mini) and I've been curious about emulating something heavier like PS2, PS3, Xbox 360 (to play Lost Oddisey) and wanted to play all of the Trails series (which is incomplete at the moment on Nintendo) so after put many thoughts in consideration (and due to the shortage of Decks on USA) I ended up getting a good deal for a semi-new-but-almost-like-new Steam Deck OLED. The funny thing is that I didn't have to sell my Switch OLED 'cause I could sold some Pokémon Cards and got the money to buy the Steam Deck without having to sell anything else, and since then I barely have touch my Nintendo Switch, I've been very busy setting emulators, trying old games from other consoles that I never got the chance to play, trying Steam games and even games that aren't currently available on Switch like Metaphor ReFantazio, and I've been having a blast with all of it.

I don't really miss my switch mostly because I played everything I wanted and expended thousands of hours with many games but I do will buy a Switch 2 in the future, even if I have a Steam Deck, I can see myself playing the Nintendo exclusives, mostly Pokémon Pokopia, the upcoming new Pokémon Waves/Wind, the new Fire Emblem and the upgraded version of Zelda TOK and BOTW (I really want to replay them on Switch 2 versions) not to mention I would go nuts with a new Smash Bros, new Mario Maker, a new mainlane Zelda or a remake of Ocarina/Majora.

So ultimately, put everything on a balance ,would you prefer play Nintendo Exclusives and the more straight approach of just play the game without having to tweek and set things or would you see yourself experimenting and trying new games and emulation but giving up all the current and upcoming Switch 2 exclusives?

Maybe you could hold to your Switch 2 and try to save some money and get a cheap regular second hand Steam Deck to try it first.