There's nothing preventing you playing old PC games on a TV while sitting on a comfy couch.
If you're playing old games, you may have some difficulty if you're trying to do it all with a controller - especially if it's not a Steam Controller.
But many games are completely fine if you set them up with a keyboard and mouse first and then use a controller from that point onward - especially with Steam Input.
And there's nothing preventing you from just using a keyboard and mouse with a good wireless lapboard, or a smaller wireless keyboard with an integrated touchpad.
Corsair's K63 wireless lapboard is my preference for that, as I wanted an integrated solution that is easy to move around rather than a separate keyboard/mouse/board, and while there are smaller options, those were too much of a compromise on functionality (mousing area too small, poor wrist support).
Games are a lot more fun for me at high frame rates and using a mouse & keyboard.
I don't do it to feel "superior" to anyone else playing the same game on console with a controller. I do it because it's a lot more fun and makes the experience a lot more immersive for me.
In many games, low performance or having to use a controller can make me very motion sick - which completely ruins any chance of having fun.
