It is real easy to talk tough over the internet I suppose. So much for an intelligent conversation when the other party involved resorts to childish, trite remarks. According to your train of thought, why don't you condemn or ban fast food? Heart disease is the number one killer in the US. Fuck all the people killed by fast food yeah?
The difference there is that eating fast food is something we do to ourselves. We are the ones who receive the most harm from our own choice to eat fast food in excess. Gun violence, on the other hand, allows one to very easily make choices that harm others without harming oneself. Furthermore, the nature of the harm is quick and devastating - a little bit of gun violence does significantly more damage than a little bit of fast food. Fast food takes a long time to kill someone.
What about smoking? Smoking can be attributed to 17x the amount of deaths compared to guns. Please ban cigarettes.
I would love it if that happened - besides the second-hand smoke issue, I can't stand the smell of tobacco smoke, personally, and my grandmother died of lung cancer due to a smoking habit. Smoking is right on the line between fast food and gun violence. Like fast food, the harm is slow to act and doing it a few times won't kill you, but like gun violence, it can affect more than just yourself. The last point is the breaking point - by smoking near others you are actively harming them in the same way that you are harming yourself.
On the other hand, it IS possible to segregate smokers away from others so the smoke doesn't affect others, and others can (usually) move away from the smokers, so the problems they cause are avoidable. A case could be made for not banning tobacco on those grounds, but that doesn't work for guns. One cannot escape a bullet once it is fired at you.
And of course, to state the obvious, neither fast food nor tobacco smoke can be used as a weapon to kill people.