And people actually chat with you! (Oh, the non-tango horror of it all!)
Here's my way of rationalizing this: Swing dance music all sounds the same to me, so I could take chat breaks and stuff. But at a good milonga, there are all the different orchestras, so I'impatiently waiting for the the next orchestra. I'd rather dance than hang out and chit chat. (Remember, I'm rationalizing here)