why not 2560x1600?
With a 1920x1200 on my home PC, I really miss those 120 pixels on my 1080p screens at work
At home though, I have to put up with games cropping content off the edges (SCII, Diablo III), letterboxing (every console port ever) or - worst of all - stretching to the wrong aspect ratio.
Almost all the media I have is 16:9 or wider and letterboxing full-screen is pretty bad too, because even good monitors suffer from non-zero black levels and backlight bleed at the top and bottom edges, just where you notice it if you have a black band there instead of picture to the edge.
To top it all off, 1080p is an HDMI resolution whilst 1920x1200 isn't. 16:9 is the dominant resolution whether we like it or not.
At least with 1440 vertical pixels, you are guaranteed to gain resolution coming from a 24" screen, whereas we were screwed over when 1920x1200's started getting replaced by 1080's at the same size.
Each to their own, but I'm tired of fighting aspect ratio problems and will just conform to the 16:9 trend for my next purchase