Steam deck is a fantastic bit of kit do doubt about it. It’s totally awesome but I felt like I had to sell up as I just wasn’t using it as one should.
For context I’ve always been a console player my whole life and have never tried pc gaming until I got a deck. The first few weeks grabbed my curiosity being able to adjust settings and mess around with what ever I wanted.
But I also had a ps5 and most games especially newer ones just run and play better on there so I found myself just not using the deck. I also thought the deck was too bulky to really be comfortable taking it out with the battery being drained super fast and using it as a portable should be used.
I sold it and bought a switch lite which you can literally fit in your pocket it’s very portable and with games not using much power on there the battery generally stays functioning for about 3-4 hours on average.
Your rationale is perfectly fine to me. You bought something that you should never have bought in the first place, realized it and got something that was more suited to you.
You were never into PC gaming, so a device geared towards that category was never going to fulfill you.
I on the other hand started out with consoles and then switched to PC gaming which I have been doing for years now, so the Deck was a highly suitable and practical device for me. It allowed me to play my already existing PC games library on the go.