Call me immature and insulting as much as you wish (it only shows you to be at least one if not both).
You don't like my anecdotal stories, yet, you expect the rest of us to take yours as the epitome of perfect parenting? I'm sorry, but I am not the one with the problem here. Through your own anecdotal stories you have informed us that your own mother was even more irresponsible than this woman. Your mother just happened to be lucky and no tragic results ensued.
This debate is about whether a parent is responsible for their childs safety in a public place. That's the bottom line.