More fun facts:
-More people in virtually every first-world democracy are murdered annually by means other than a firearm than with.
-Even in the US, with the highest firearms-related death rate in the first world, more people die as a result of motor vehicles (all causes) than die as a result of firearms (all causes). By the way, both general poisoning and drug poisoning are higher than vehicles too.
-In Canada, where there are licensing requirements for all firearms owners and specific usage restrictions on both restricted and prohibited firearms classes, the penalties for firearms offences are all federal, criminal legislation (including improper storage, etc). The penalties for most motor vehicle offences are provincial offences, which are non-criminal (though some motor vehicle offences are also criminal too; namely, things like drunk driving). This despite the fact that in 2004, ~2800 people in Canada died from motor-vehicle related causes; 743 died from all types of firearms causes (76% of which were suicides). In other words, vehicles account for 4 times the number of deaths in Canada in 2004 than firearms, yet have lesser requirements to own them, operate them, and face lesser penalties when their use is improper.
-To compare guns to another potentially-lethal tool, in Canada in 2008, firearms (with all their related legal requirements) were used in 34% of homicides. Knives, which anyone can make, nevermind buy and carry with no restrictions whatsoever, also accounted for 34% of all homicides. Knife used has doubled since 1974; firearm use has halved since 1974. Interestingly though, the number of times a knife was used in a violent incident has not changed for a decade. The overall homicide rate has dropped since 1974.
-In the UK, with some of the mos restrictive gun laws in first world democracies, knives are used in crimes four times more frequently than firearms. While the UK has a marginally lower homicide rate than Canada (1.0 vs 1.5 in 2011 according to UNODC), it also has a considerably higher violent crime rate (for which there is no single stat, so I'm not linking to a dozen sources).
What does all this mean?
I'd suggest it means firearms are not the inherent problem most of the time. Rather, unreasonable firearms use and access can be mitigated, but its overall impact on deaths and crime doesn't tend to significantly change. People are still going to die accidentally; people are still going to kill each other. Ergo, it makes sense to craft laws that improve safety around firearms ownership and use, but with the objective of improving safety. If your objective is to reduce overall crime rates, firearms regulation has a very limited benefit that makes an impact on the continuum of virtually no restrictions to reasonable restrictions, but pays diminishing returns for increased costs on the scale of reasonable restrictions to complete bans.
The statistics on this are outrageously complex. Firearms have no causal effect that is easily discerned.