Hell, I was gaming on a PC from 2013 all the way into 2022 (i5-4670K, 16GB DDR3 1600, and a 770, later upgraded to a 1070). My CPU stopped meeting the minimum requirement for games around 2018-2019, but it was enough to maintain 60 FPS @ 1080p in all but the most demanding titles. If a pile a money didn't fall in my lap, I'd still be gaming on it today. But now that I've experienced 4K 120Hz gaming in HDR with Ray Tracing and DLSS, I could never go back. It was worth building a new PC for HDR and DLSS alone.
I'm on a similar train. My old PC can still run around half of new games but I can see the struggle. I'm considering going for a mid to low range laptop with Linux for everyday stuff and move my gaming to a Steam Deck. I ran the numbers and this option is around $750 cheaper than building a new mid level PC the way I want it. Unless I get a big downfall, the Deck+Laptop way is gonna have to do in the next year or so.