> Just because it's all public doesn't mean you want the cashier from the supermarket following you around to your family picnic.

This has never happened to me. Out of the space of “bad things that can happen to me” I don’t have time to worry about things with such a small probability of occurring.

I think if you're a fat middle aged man, it's not likely to happen to you personally. But you must have daughters, nieces, a mother, or some sort of female presence in your life. It happens to people like them.