This video shows what can be done with the Unreal 4 game-engine, which is essentially a core infrastructure around which many games are built.
The mesmerising photo-realism you see is a major breakthrough, but it will still be another few years before this quality is seen in mainstream video games. This is because when the computer you are running it on has to simultaneously process this level of graphics, but also movement, physics, interactions and other AI characters, the load is still too much for our hardware to handle.
Given about 5-6 years, however, the hardware will have improved tremendously (and we can still hope for quantum-computing to actually happen at some point, we suppose) and the engine will have made the processing power necessary to render such graphics far more efficient.
It probably won’t change much for you if you don’t play games, or stick to Minesweeper and Solitaire, but perhaps it might change your mind eventually, especially if you add in that Oculus Rift is coming soon.
PM is still very excited, regardless.