The reason we continue to produce double action triggers in this day and age, and the reason that the Glock automatic trigger has been twice modified since guns of that ilk hit the scene, is because we need to make it harder to pull the trigger.

In a nut shell, shootings tend to happen at close range in highly stressful environments that are instantly filled with tremor proudcing adrenaline.

We would need to know that, in that kind of environment, when confronted with that awful choice, that it was actually your decision and intention to shoot.

Although people are issued excellent .357 SiG automatics with an excellent single action trigger pull, they are trained to use the longer double action trigger on the all important first shot.