I think the advantage of having non-maximized windows is that dragging and dropping data from one app (or even one window) to another is a lot easier and more i

I think the advantage of having non-maximized windows is that dragging and dropping data from one app (or even one window) to another is a lot easier and more intuitive without going through the Windows task bar. It's also easier to do something like read directions on a webpage while you execute those directions in another window without hiding it when accidentally clicking in the browser.