The main advantage of a curved monitor is that the viewing angle is closer to 90 deg which can help with colour uniformity.

That being said, I think you are mostly thinking about the aspect ratio of ultra-wide monitors in general. It's a matter of preference, but I will take an ultra wide (>= 40in) any day over two regular 16/9 monitors. I end up having my main window in the middle 40% with two other windows on the side at 30%.

> They seem optimally designed to ensure that you'll have glare on your screen no matter how you position it in any kind of well lit environment.

I guess the workaround (with any monitor, really) is to ensure that the light sources are not behind you.