Everybody has their, “Holy cow, I can’t believe life in San Francisco is so expensive!” tale of woe. For Eddie Kurtz, it was reading about a $4 piece of toast. Venture Beat recently published a blog post titled, “$4 toast: Why the tech industry is ruining San Francisco” and cited a — you guessed it — $4 piece of toast from The Mill on Divisadero Street. Kurtz, political director for the Courage Campaign, cited it as just one example of an increasingly unaffordable San Francisco that motivated his organization to launch a petition calling on Mayor Ed Lee to do something about it.