Unfortunately, guns can’t discriminate between criminals and innocent bystanders. Studies have shown that unintentional shootings are four times as common as occurrences of gun use in legitimate home defense situations. You’d actually be more likely, statistically speaking, to shoot someone by accident than you are to shoot a home invader.
Having a gun in the house also increases your own chances of becoming the victim of a firearm-related homicide or suicide in the home. Researchers have found that this holds true regardless of the type of gun you own, how you store it, or how many guns you own.
Finally, if you have children, you should take into account how the presence of a firearm in the home might affect their safety. Most gun-owning parents take precautions to keep their children from finding and handling the family’s firearms. However, despite these efforts, children often handle guns in the home without their parents’ knowledge; in one study, 22% of parents who believed that their children had never handled the guns in the home were contradicted by the children themselves. Further, when a child or teen is killed by a firearm, the gun that killed them comes from their own home fully 72 percent of the time.
For every "self defense" there are 4 accidental/unintentional shootings. 7 homicides and 11 suicides.
You are at the low end 2x more likely to be the victim of gun violence in a home with a gun. Most stats show 3x.