I am uncomfortable buying them because I find working at a desk with a large monitor uncomfortable and I don't see any personal advantage to the extra real estate for coding. I have plenty of space on a 16" laptop for three vertical terminal panes: One for editing, one for docs and one for shell commands. If I need to search something on the web, I can cmd-H to switch spaces and cmd-L back to the terminal. Since my workflow works on my laptop, it works _anywhere_ I go.

Obviously, my workflow is not for everyone, but I pretty strongly doubt that large monitors are the future for most people and am almost positive that they aren't the future for me.