I don't think anyone sitting 10 feet from a 65 inch TV can tell the difference between 4K and 1080P, unless they are watching a soccer match. Much of the time, the action being televised is 100 yards or greater from the camera. In order to keep a wide enough field of view to give the viewer a meaningful picture of the attacking and defending player positions, the camera must stay zoomed out. As a result, the players shown on the screen are very small. At 1080P, players' facial features are lost even if one sits close to the screen. All you can see of a player's face is a flesh-colored blob. At 4K facial features start to become distinguishable and you can recognized the players at 10 feet from the screen. The numbers on uniforms are also easier to read. Thus 4K does not just provide eye candy, it makes an appreciable addition to the viewer's enjoyment of the telecast.
I look forward to the day when all soccer matches are telecast in 4K. As for everything else, from my normal sitting position 10 feet from my 65 inch OLED screen, 1080 P is perfectly adequate.