Thinking back to drafting days, I can still hear my professors telling us do this from time to time. You see your design from a new perspective/angle. You see 'errors' that your eye/brain got used to seeing and your brain then forgets to remind you to 'fix that'. Or things that you hadn't noticed. Our brains 'fill-in' the geometry on the screen and seeing errors, mistakes, what doesn't work is harder than the old hand-drawings.
These days you print out what you are doing and turn the print around to directions that don't match your screen. OR on screen you can look at your building in the in 3D window from directly over-head and orbit around.
Yes, it would be nice to be able to rotate one's project on the screen.
MacBook Pro Retina, 15-inch Yosemite 2.8 GHz Intel Core i7 16 GB 1600 MHz DDR3
Mac OSX 10.11.1
"Implementing Successful Building Information Modeling"