Yes. It's called control.

Holding the camera right up against (literally touching) your head with both elbows tucked in makes the camera almost become part of your head. You move your head/camera as a unit, and what you see through the viewfinder is your whole world. Waving a screen around in front of your face just doesn't have the immediacy, the focus, of working through a viewfinder.

But then again, YMMV.

tanstaafl.