Square screens give you the most usable space for ratio-agnostic content. This is because the usable size of a single flat display is limited by the perspective distortion that occurs when either dimension of the display grows too large. For the same reason, 1:1 would also be the optimal ratio for implementing a multiscreen setup for Horz+ widescreen games. Too bad 1:1 screens (or anything close, such as 4:3) aren't offered in large sizes and resolutions.But thats a ridiculous argument... Same could be said for 4:3, the black bars just become bigger and bigger
Might as well go all the way and get a square screen and support every kind of format
The fact is, as zerorift pointed out, our vision is more like 2:1, so it makes zero sense to do monitors which cover a large vertical area, because it will simply not be used