When was the last time your gun escaped from your custody and murdered your neighbor's kid? Or your visiting nephew?
Guns don't have free will.
That said, there may be a useful purpose for pit bulls -- in the cosmetic industry.
But guns kill thousands per year in the US, much more than pit bulls. They are even designed to be dangerous. Seems to me Big Government needs to step in & protect us all. For the children, and all that.