I don't either see a point of having 4K TV vs 1080p TV. To me is just marketing, I have at my house both a 4K and a 1080p and from a normal viewing distance (that is 3/4 meters) you don't see differences.
Also in my country (Italy) TV transmissions are 1080i at best, a lot are still 570i (PAL resolution). Streaming media can be 4K (if you have enough bandwidth to stream it at that resolution, which I don't have at my house). Sure, if you download pirated movies you find it at 4K, and if you have the bandwidth to afford it... sure.
But even there, sometimes is better a well done 1080p movie than an hyper compressed 4K one, since you see compression artifacts.
To me 1080p, and maybe even 720p, is enough for TV vision. Well, sometimes I miss the CRT TVs, they where low resolution but for example had a much better picture quality than most modern 4K LCD TV where black scenes are gray (I know there is OLED, but is too expensive and has other issues).