If you don’t floss your teeth, they won’t necessarily rot away. The vast majority of car trips do not include any metal bending, so why wear seat belts? And why not smoke? Not all smokers get cancer. Or you could adopt Oscar London’s compromise, "If you smoke, why bother wearing a seat belt?" And some rock musicians from the 1960s are still alive, so maybe all those drugs are really beneficial, acting as some kind of preservative.
As for me, well, I’m an engineer, and I live in a statistical world. I’m going with the odds.
Bob Cowell, IEEE Computer, March 2004