many of you gamers, confuse two terms, gaming and playing.Yes gaming a FPS will be better with full immersion systems (Rift and co.) or classical combo screen+keyboard+controller. But playing can be interesting also in living room, like someone mentioned C&C style game, or any other multiplayer strategic game, like Allies and Axis style, or Ruse. But thats still just gaming, lets take the playing for children, imagine to build a town in the room, like legoland, play battles (with just imagination, not game concept) with your miniature virtual soldiers, have a tea time with "living" doll, etc.
Also stuff like visualization of eshop items, imagine to have the new shoos on your living room desk or better merged over your feets...
The sky is the limit..
The near future is getting pretty exciting.