Most power tools aren't really DIY when you ask ER docs.

For example, a new report by the Center for Disease Control and Prevention finds that nail gun injuries have more than tripled in the last decade. In fact, there were nearly 40,000 of them last year alone. Duke University's study for the CDC concludes that the number of patients entering the ER with "self inflicted punctures" from nail guns coincides with the years when the former construction jobsite power tool became available on the Home Depot shelves.