Marc- Your theory that many people in this thread may only support a technology because they got suckered into buying something may apply to a few, but others like me, have had a passion and fascination for the medium of 3D stereoscopy for a long, long, long time.
It began for me when I was just 5, well over 60 years ago. I was digging through my grandparents attic and discovered a box of post cards with double pictures and a stereoscope viewer. I would sit for hours looking at those old stereo pictures. I wanted one so bad my parents bought me a "modern day" version called a viewmaster. Many years alter I saw 3D in the theaters and then at Disney World. I hoped one day I would be able to see those 3D movies in my home. Today, I not only can do that, but I can create my stories in 3D with my own 3D stereo production operation.
The fact that 3D stereo imaging has been here since the 1800's in one form or another and has never gone away, only became more or less popular from time to time does not mean it is a complete failure. Judging by the last couple of CES conventions, it has gotten even bigger as the ability to display 3D has been incorporated into more and more TV's, more 3D BD players, and even more development work in passive 3D projectors. There is always the newest innovative technology to highlight each CES and last year it was 4K and UHD. While prior 2 years we had lots of new 3D camcorders being introduced, 2014 only has one new one. If you had asked, "What's next?" in the evolution of camcorders, you would have been told, 3D 4K camcorders, once these 2D 4K systems are standard.
All of the major DPs I've had the privilege to meet and work with over the last few years have detested 3D, with few exceptions (including Chivo Lubezki of Gravity). The compromises in projected brightness and color are a huge reason why.
Most of my peers in this profession are admittedly lazy and not innovative DP's. Few like the idea of having to learn a new tool. They have their comfort zone in the old and traditional ways. They are not artists, they are technicians. Likely most of your connections with this profession were with DP technicians
. Your description sure says that. This is best described by the guys at RED when they talk about the early days of getting acceptance of digital cinema from the DP's who refused to consider digital because it was so radical from traditional film. Soon, however, many saw the advantages of digital cinema for what it offered, not for what it could not do like film. I smile when I recall all the reasons sited why digital cinema will never catch on and will be a huge failure.
Most 3D enthusiasts, like me, do not claim that everything must be in 3D or we refuse to watch it. Heck I don't even use 2D to 3D conversion. We are just pleased to see the tools available and being used more and more as appropriate.
There may be a few like yourself who fit the picture of desperately trying to support something they've already paid for but I believe most of us HERE, are sincere in our enjoyment of the medium. And, look forward to budgeting for the next 3D innovation for our home theaters.