I didn't say there's an inherent harm in just owning automatic weapons. I would be fine with someone owning an automatic weapon* that was incapable of being fired. I was referring to the potential harm in every private person owning an automatic that was capable of being fired.
*using "weapon" as a synonym for "firearm"
and yet statistically there is greater potential for harm in owning an automobile. So that argument doesn't really fly either. this is an argument that can actually be measured. Based on passed data we can extrapolate how many deaths there will be as a result of car accidents. Surprise, surprise it's more than firearms. So this argument doesn't work either.
Now your argument is we should allow ownership by prioritizing the potential for harm. Statistically the potential for harm is greater with automobiles. So I suggest getting your priorities straight you good samaratin you, and focus on banning us from owning things that actually do have the greatest potential for harm. When you've cigarettes, alcohol, and cars knocked of the list then we can talk guns.