And this is what the argument boils down to.
Some say that making the guns illegal makes them harder, but not impossible, to come by. Making the "crime of passion" multiple shooting like Sandy Hook much more difficult in that it would require advance planning on the part of the nutcase (something that most nut bags aren't good at)
Others are unwilling to compromise on the existing situation, basically saying that the risk is worth it.
Apparently you don't know too much about "nut bags". Prime example in the theater shooting, he planned ahead and had bombs made in his apartment. Just because a person is "crazy" does not make them stupid. In fact there have been some very successful people in the world who have suffered from mental illnesses. Do not underestimate will....