[MENTION=429517]dougmon[/MENTION], more drivers there must have their windows than around here (NC). You would have to shout / sing pretty loudly before a driver with their windows up (and probably radio and/or fan on too).
I'd say my mindset is pretty similar to OP, though I may not be as conscious of such as he seems to be. The guy running the stop sign at the 4-way deserves to get hit or at least have a close call. I wouldn't do that either.
However, I do run through stop signs when there is clearly no cars around such as in neighborhoods.