[honr]

Compared to tilting my head to the second monitor, it is measurably faster to type ^3 (Control + 3) to switch to the space/virtual-desktop where my email window is open (~1.5sec vs ~0.7sec).

If one has to Alt+Tab or Command+Tab through programs, yes, that would suck the life out of productivity.

The only real benefit larger screen spaces (larger than a ~30 inch monitor) provide me with, are when I need about 4-6 open windows (maximized vertically) to switch between when dealing with large merges/patches. I haven't experienced any practical benefits beyond two ~30inch monitors.

[Ajedi32]

FWIW, I can easily shift my gaze from the upper left corner of my left monitor to the lower right corner of my right monitor in significantly less than half a second on my triple monitor setup (my measurements ranged from 0.2s-0.5s), so I'd dispute that part of your comment.

I also maintain that this is significantly more intuitive than having to memorize keyboard shortcuts for each of my more frequently used programs.

I suppose everyone's workflow is different though. If you're comfortable with just one monitor then good for you. I for one will be a lot happier once I can arrange my workspace into a neat grid of windows arrayed across my desk.