For a few years we have seen that television sets offer us higher resolutions that allow us to see images with much greater clarity. First it was Full HD, then 4K, now 8K, and later who knows.
It is true that we can appreciate the greater clarity of the images in current 8K televisions than in previous 4K televisions, but it is no less true that TV broadcasters do it for the most part in HD, and that very few broadcasts are found in 4K and almost none in 8K.
The question that arises then is: is it worth having an 8K capable TV? And in my opinion the answer is: it depends.
Today technology evolves at a fast speed and offers us possibilities that are not always completely necessary. But the competition between brands and prices (which are trending downwards) makes people buy devices that we cannot always squeeze out in all their possibilities.

Below I indicate the difference in resolutions of the most current models in the screen market
Full HD 1920 x 1080 2,073,600 pixels
4K 3848 x 2160 8,294,400 "
8K 7680 x 4320 33,177,600 “
Pixel = Single point of light in an image
Pixels are points of light that make up a digital image, and televisions present images as points of light on the screen. But our eyes do not have pixels, but rather we have rods and cones that interpret the light they receive and send that information to the brain through the optic nerve.
There have been people who have dedicated themselves to estimating what the resolution of our eyes would be and they have come to the conclusion that it would be in the order of 570,000,000 pixels.
This means that our eyes are capable of differentiating images that are in 4K from others that are in 8K, and even much more.
The issue is whether the difference in perceived image quality is worth the price we have to pay for it. And that dear friends, depends on each one.