I'm really trying to think of a time when I thought quoting was tiresome. When I don't get the joke, I just let it go. When I do get the joke, the worst it will get is a smile from me.
Here's the disclaimer - we're talking about witty quoting here. I think quoting well is an art and there are those that are terrible at it. There's original or witty quoting and unoriginal, predictable quoting. Saying "we're not in Kansas anymore" is not original quoting because it's been done to death and is the obvious conclusion. I know one guy who thinks he's the bomb because he has a predictable movie quote (including "Kansas", seriously) for any situation. Lame.
There's also a difference between what I guess I'd label "conversational quoting" and "inspired quoting". Saying "it's only a flesh wound" when someone hurts themselves is not supposed to be the funniest thing ever - it's just a touchpoint. If I had a Pythonite friend land in the hospital (God forbid) due to some accident, I might pull that line just to make them smile.
As for inspired quoting, there's something really bonding about having a moment where someone pulls out the right quote that no one really expected and everyone laughs. This is what quoters are trying to achieve but some forget that inspiration is about quality, not quantity.
My eldest brother once said that it was his life goal to speak only in movie quotes, so I may be a bit biased
