Originally Posted by nosnoop 
I believe the next evolution of digital cameras will be live preview and elimination of the mirror box.
I hope that this will not happen very soon. Optical viewfinder has such advantages that electronic ones do not have. And electronic ones do not have any advantages I need .
Only remarkable advantage is that they are cheaper to manufacture. Not particularly in my interest. I have been enough wealthy so far (30 years) to buy these optical ones :-)
EVF techonogyn is in its infancy and it takes a long time before it is even adequately good compared to optical solution.
Lets collect pros and cons from photographers point of view (not manufacturers):
Optical:
pros: light speed update rate; as good as possible resolution (eye is limiting factor);
cons: angle finders clumsy;
Electronic:
pros: angle finder can be implemented more flexible way;
cons: what ever solution (even future ones) is used as good resolution and update rate cannot be achieved as optical one has;
What other reasons we have for one or other finder solution?