Once a mathematician explained to me in mind-numbing detail why dividing by zero is impossible, so I understand why this is gross better than I ever wanted to.

Once a mathematician explained to me in mind-numbing detail why dividing by zero is impossible, so I understand why this is gross better than I ever wanted to. But having said that, I do not remember when I last saw a Divide-by-Zero-error in the wild. In practical terms, this is the last kind of bug I worry about.