Dude, I had a Pioneer Kuro Elite and bought a Samsung SUHD. That's one of the best you could buy and it was 1080. Why not just give up instead of trying to insult people making suppositions about information you don't possess. You can't see the difference, some of us can. I don't ask you to go to the eye doctor, I just accept your opinion as YOUR OPINION
I'm not insulting anyone and your pioneer kuro elite is outdated. Great picture, but from then till now there have been newer tv's that produced a better picture, I have the newer elite lcd tv that produced deeper blacks but it doesn't matter. The difference from my tv to a 4K tv is minimal in picture quality unless I upgrade to oled.
I have never anywhere said I cannot tell the difference. I said most people cannot tell the difference from the distance they sit from their tv. Also most differences they see is simply better image processing than their prior tv. So both 1080p and 4K content will look better on the new tv when compared to the last, and they will think it's the magic of the 4K tv. It's simply because the previous 1080p tv did not have the best processing or lcd/led panel available. Simple as that, if you understood what I said you will not be offended.
To add to this, lg currently sells a 55" oled 1080p tv from last year that has almost identical picture quality to the 55" oled 4K model from this year. Cnet did a side by side comparison and the difference was BARELY NOTICABLE. One tv was 1080p and the other was 4K, one was the best picture they've ever seen in a tv last year and the other was the best picture they've seen in a tv this year. They also recommend you save money and get the 1080p model from last year unless you plan on sitting very close in front of the tv. I will repeat, they recommended getting a 1080p tv over the best 4K tv they've seen this year. I wonder why.
So it's like I have said and countless other professionals have also said unless you're watching 4K content and sitting extremely close to the tv most people cannot tell the difference.
Though there are some exceptions to this like I also stated before. Depends on what your prior tv was you may notice a huge improvement or you may not. However the improvement you see in picture quality is not because of 4K it's because the other technologies in the tv like contrast, color, uniformity, image processing. As an example, if you're going from a 40" 1080p tv to a 60" 4K tv of course you will see a difference because the tv is 20" bigger. 4K will shine on even bigger tv's like 65" and above when uncompressed 4K or better compressed 4K content becomes available.
However people now are just raving about 4K when there are so much things to consider before upgrading so you can get a substantially better picture than what you had before.