I have a 49" curved monitor. It is effectively two 27" 1440p monitors stapled together (5120x1440). It is the best monitor I have ever had. 1440p has a very decent [higher than typical] pixel density but is not "retina". Fonts look pretty smooth, but you can still see pixels if you try really hard. Overall, I do think high density screens look amazing, but the software has not quite caught up to them. The benefits are on the softer side, and if I could just have magical mega-high-DPI displays with no side effects, sure why not? As it stands, 49" curved monitor is pretty fine. It fits four windows side by side at reasonable resolutions.

Primary apps go in the middle, such as code editor, etc.. Tertiary windows, such as documentation go on the outer edges. Still quite usable, but a little out of the way for extended reading.