> I hope it goes the way of 3D.
To be honest, I think that it's even less appealing than 3D. The law of diminishing returns kicks in and you won't notice any real difference in quality over 1080p for moving video. If you've got really good eyesight, you might notice a tiny difference for still images at normal TV viewing distance. At best, it's a slight incremental improvement at the expense of a huge increase in bandwidth.
At least 3D does provide some new functionality, even if it's not always that impressive.
4K really does seem to be a solution looking for a problem. The only possible real benefit to us is if results in affordable 4K monitors for our computers.