Because the FBI doesn't keep statistics on how many times guns are used in self defense. It makes the argument one sided from the start, as they are crime stats. If you dig deeper, you will find that hundreds of the 11,000 homicides are justified, acts of self defense, by citizens and law enforcement. Those are just the times when the gun was AND the perp was killed. They don't give stats for perps that lived, whether or not the gun was fired!