More than 30 percent of all auto accident fatalities in the United States involve drivers impaired by alcohol. These accidents led to 11,773 deaths in 2008 alone [source: NHTSA]. Most of those deaths could've been avoided if the drivers involved simply hadn't gotten behind the wheel while drunk.
Alcohol causes a number of impairments that lead to car accidents. Even at low blood-alcohol levels, intoxication reduces reaction time and coordination and lowers inhibitions, which can cause drivers to make foolish choices. At higher levels, alcohol causes blurred or double vision and even loss of consciousness. Drunk driving isn't just a terrible idea -- it's a crime. In the U.S, getting caught behind the wheel with a blood-alcohol content (BAC) of 0.08 or higher will probably earn you a trip to jail.
It's easy to avoid driving drunk. If you've been drinking, ask a sober friend for a ride or call a cab. If you're planning to drink, make sure you have a designated driver. The mild inconvenience of taking a cab home is nothing compared to the disastrous consequences of driving drunk.