That's a macro issue. Access to tobacco is associated with an increased risk of cancer. I don't smoke. It's a personal choice.
Just as knives in the kitchen, electrical outlets in the home, a tub deep enough to drown in, a swimming pool, etc... increases the risk of injury or death. These are risk vs reward decisions people make. There's obviously a risk in calling 911, you could be shot on accident (like what happened to that poor woman in Dallas). Everything carries with it a certain amount of risk. If you don't trust your ability to provide a safe environment for your family if there's a gun in the home, you shouldn't own one. I am a strong supporter of the freedom to not own a gun and I think some people should be legally barred from ever possessing a firearm. I would not be against a requirement of training and testing before you could be given the right to carry a firearm. Oh wait, that exists already and I've been through it multiple times (plus military training). I think I'll be ok.