I think I might the only one who likes and wants bezels on everything that has a display. Extra large bezels. Perhaps the only exception would be phones as they increase the size of the device.
Bezels are important to frame the screen content from functional perspective. Think of it like a frame for the art work. Black bezels occulude the distracting edges and background noise from the screen and you have always have a constant black border. They can be made to look nice as well like some of those Bang & Olufsen TVs[1] and Sony Trinitron Professional monitors [2].
Contrararily, there is no reason to the opposite besides "aesthetics". Can you think of any?
Alas - the momentum behind bezels is so massive, it is impossible to reverse this trend. Same with "borderless" trends in UI/UX.
I agree that bezels can look good, and small bezels are nice to frame the image as you mentioned, but the iMac bezels are neither small nor good looking.
I am arguing that they're invaluable even if they're not needed now that LCD technology has advanced in terms of being able to assemble it.
It actually doesn't matter if its a screen, artwork or a photo. IMO bordered (black or white) photos is vastly superior to borderless photos. There is a reason why every museum that displays fine art photography have borders, almost always.
I don't see any distinction with screens. Perhaps, even more so important to have distraction free edges on monitors than photos.
What on Earth is everybody's sudden aversion to bezels?
To be fair I'm biased because the shift to bezel-less (on phones) was accompanied by a shift to humongous screens that I can't use. Now I'm stuck with the new iPhone SE as my only viable upgrade.