Quote - It's superfluous in most cases.  I guess it would be acceptable to use at the beginning of a sentence as a rejoinder, otherwise it's merely a noise with no reason to be there.

On the subject of noise with no reason to be there, my pet hate is putting "go-ahead-and-..." in front of every verb. It's a spoken thing, and seems to be uniquely American, a typical video tutorial is full of "I'm gonna go ahead and select, then I'm gonna go ahead and move it, then I'm gonna go ahead and hit C for copy..."