You want to execute people who actually had not control over their behaviour,
Well let's just use the example of one of those your POV defends ... Andrea Yates. We know full well that this woman claimed she was ill and a possible threat to her children.
Being that she was able to communicate this with such vigor, why did she not walk away to never been seen again?
The very fact that she was AWARE of her *illness* makes her responsible for anything she does as a result.
Also, IF you truly believe these individuals are not responsible, why shouldn't the homicide detectives take off the handcuffs, apologize for arresting her for a crime she had no responsibility of and send her on her way?
Not responsible for a crime means no action should be taken ...
Do you want someone like this to end up in the school your children attend or ... as your next door neighbor?