Well this is an interesting stat:
FACT: Suicide is still the leading cause of firearm death in the U.S., representing 56% of total 2002 gun deaths nationwide. In 2002, the U.S. firearm suicide total was 17,108, a 1% increase from 2001 numbers. Total gun suicides in Illinois for 2002 were 466, a decrease of 8% from the 2001 numbers. Most suicides in the U.S. are committed with firearms.
-Numbers obtained from CDC National Center for Health Statistics mortality report online, 2005.
Basically, most of those people who die from gunshots were going to off themselves anyway.