I've never had one on my bikes, though I speed every single day that I ride. I was pulled over 11 times in the years 1987 (when I bought my Triumph) through 1991, when I moved back to Oregon from Washington, but never got a ticket because I wasn't doing anything. How many times did they say they were looking for somebody else on a bike going the same way, dunno I lost count. I haven't been pulled over since. I have no idea what changed.
Maybe 3 tickets in cars, last one over 15 years ago. I ride and drive like Monte describes. When I do get a ticket I just pay it, it's not like I haven't earned it.

A friend told me that if you have a concealed weapons permit, that a cop alone won't pull you over...anybody heard that? It would be a good reason to get one, though I don't have anything concealable.