[xiljin]

I use Linux and a window manager with 10 virtual desktops/workspaces, keyboard shortcuts let me instantly jump to or scroll through them.

That said, I've never understood the need for multiple physical monitors. Maybe someone can explain a few advantages of using more than 1 monitor vs a single with multiple workspaces?

[et2o]

I can have a big IDE open will simultaneously having a terminal and web browser open to a website that helps with what I'm working on in the IDE. Can't really do that with one monitor, even with one desktop. It's worth it, absolutely, for me. Whatever works for you though.