1- Because they work- since not all dogs shut down with its use, it has achieved its affect.
2- Because these techniques were used on us- tickets, firing for poor job performance, getting yelled at or spanked. We do not reward obeying the speed limit.
3- Because the act of punishment itself, can be rewarding to the punisher- serves as revenge for perceived acts of defiance

Sit Means Sit trainers do not employ punishment to get our dogs to perform a desired cue. You will not even find us yelling at our dogs. We have a system that works without yelling or employing punishment.