Two things; it's new technology which means there will be more development, probably along the order of what you see with computers - where your current technology will be dated in 6 months. Next, if it is indeed technology here to stay, the price will continue to drop as it ages. Look at plasma tv's now. There are some fantastic pricing available for plasma - not because plasma is necessarily inferior, but because it's the older technology. If 3d survives, the prices will continue to drop while the technology improves.
That said, I believe that we want what we want and our "wants" aren't always rational, nor do they have to be. If you really want it, and can afford it, buy it. Simple.