I don't like having degraded video quality and absolutely terrible (by comparison) audio quality. Dolby Digital simply does NOT cut it when you've heard DTS-HD MA on a proper surround setup.
Some people are fine with it but there are lots of people who want that quality because they paid for the system to get that extra impact from their movies. IMO streaming is only good for kids, old people who have bad eyes and ears to begin with, people who have an HD TV and nothing else to go with it, and tablet/phone users.
Nobody has even addressed the 4k "issue" yet. Netflix says a stream of 4k with 5.1 will take roughly 15Mbps and the average consumer in the US has half of that. Just imagine the reduced quality of the 4k content at that much compression. I doubt there'd be much difference between Blu-Ray 1080p and the supposed 4k stream at 15Mbps. Uncompressed video bitrate for 4k is 477.76 MB/s. The bottom line for me is if you've shelled out the bucks for that calibrated Sharp Elite, high end projector, or other high quality display you should demand the quality to show it off.
I used to be an audio/videophile, so I would have agreed with you. Then I realized, no..it's not worth it. I have a very nice theater set up (not projector), and I am still ok watching standard def for things such as TV programming if I have to. The whole concept is to constantly sell you new things and take your money selling you the same thing over and over. I've been over it since the flip to blu-ray. I used to buy TONS of VHS, then DVD's. I tried blu-ray and said enough is enough. It looks pretty, but that's it. It is not worth the hassles involved (to me) for what is clearly anti-consumer. Sure, there are a few extreme examples of things I really love, for the other 99% of things, I just don't care enough. I ripped everything I owned and threw them on a server. A crap movie in HD is still a crap movie. A few less pixels doesn't make it better. It's not about knowing, it's about not caring to buy into the BS.
4K might be great, until every ISP has went to tiered limits. Then what? You think a disc based delivery of it is going to be a good thing? I doubt it.
On further thought, as much into tech as I am, I am finding myself starting to rail against it. It's no longer about making the next great thing for the world like it once was. The shift to "how can we milk everyone for as much money as we can and rinse repeat as often as we can" focus has soured me to the future. --- anyway, getting off topic ;p