Who cares what you play the games on. I built myself a decent pc a few years ago just to play Duke Nukem 3d some more. If you’re burnt out, just stop playing. If you dislike “triple eh…” games just play something else. Or play something older. Or something completely out of your safe zone. Play a genre you’d never touch otherwise.
If you need the cash, sell it. If you don’t, then why trade it in to buy something that does the same in a different form factor. But don’t sell something just because it’s too good for the job. A Porsche can still bring you to work.