I don't want you to think I'm on some sort of infographic kick or something but I just stumbled across this great infographic showing US gun usage, ownership, and death statistics. It shows that as the number of guns owned has increased by 50% gun-related crime has declined by 73%.
In terms of accidental deaths, you are 17 times more likely to die from a fall than you are from an accidental shooting. As an aside, if more people - especially youth - were taught gun safety, the differential between falls and accidental shootings would likely rise even more.
It can be seen full size here