Some people are used to more than one monitor without feeling overwhelmed. But for others, it is a source of distraction. I only see the need for a second monitor if you share your screen with others and don't want to show confidential information. Moreover, I don't think it is healthy to move your head all around frequently.
alt + tab will do the trick.
Yes in some cases :)
I like to see both windows opened.
Some people are used to more than one monitor without feeling overwhelmed. But for others, it is a source of distraction. I only see the need for a second monitor if you share your screen with others and don't want to show confidential information. Moreover, I don't think it is healthy to move your head all around frequently.
Did you try monitors one on top of another? I feel that healthy, my neck is ok :)
I use only 2 monitors:
1) read/watch
2) write/draw