I'd argue that 1080p gaming is also perfectly fine. These days most games have split the UI/window resolution from the game resolution. So you can have 4k sharp

I'd argue that 1080p gaming is also perfectly fine. These days most games have split the UI/window resolution from the game resolution. So you can have 4k sharp text and UI, while the actual game runs at 75%/50% resolution and you largely can't tell the difference while sitting on the couch.