Enough is Enough

After yet another staged shooting at a large gathering of people, I ask the question: When is enough enough?

Admittedly, I do not understand the motives and reasoning of people clamoring for all types of guns to be available to the general public. I do not own a gun. I do not plan on owning a gun in the near future. But it seems to me that the only types of guns that should be available are ones for recreational purposes. Why are guns that help perpetrate things like the mass killings in Aurora, Colorado at the movie premiere allowed to be available to people?

I really do ask that question wanting to know honest answers. Because I do not have any.