Obviously, you can tell I dont like BULLSHIT, and have no patience or tolerance for it, and will say so right of the bat. I have always believed in getting to the point, and cutting your losses and have no time for allowing others to "perform" for me. So I guess, like you, I will shut it down right away. Not sure that attitude comes with age? I've always been this way. Even at work, if a boss tried to explain how to do something that I already knew how to do, I would say "I know" right away and spare him ... Probably not courteous, but its Efficient !
My attention span only allows for interesting, useful information and people that can deliver it. Why be stuck in a place you've already been ?