Performance of these things never ceases to amaze. The 980 knocks down all the conceptions - then the 990 slaps your wrists afterwards. The 995 would be something to behold, if it ever sees the light of day (I doubt it).
The price really is an irrelevance. The majority of people who'll use these will have them donated to them, unless you own your own oil rig or something. Look out for all the benchmarking records to be broken once again, with the usual suspects having this new toy.
Tis nothing like the old days where the top-of-the-line extreme processors were a little over half this one's suggested price, still high for their day, and a nice trip to the states would get you one for half the price
*cough*, but even so, professionals and borderline people would actually purchase and use them.
Not withstanding the absolute power, it's something of a showcase for me. The Intel line-ups, even the "new" sockets, I don't see have too long a shelf life. There are too many new technologies coming through the pipeline to demand a serious outlay of cash for an upgrade.
If you have to - you have to. However, just this week, Apple's new mbp is coming out with a Thunderbolt socket. PCIe 3.0 is going to raise it's ugly (well pretty really) head. SATA3 will become a standard, as will USB3.0. And who knows, maybe the memory will step up to suit...
(just this week I had to stop and think, the IX48 I'm using to bench stuff is using the same grade/rating ddr3 as the i7 mobos consider good - I was donated that years ago)
... at this point, I'll buy something new me thinks.