[crazygringo]

Yeah, but you have to factor in the probability of the orange jumpsuit.

You're not going to be of much use to your family in jail.

It's still a difficult decision, but it's not just your job vs your morality. It's your job vs morality+potential jail.

We dish out criminal sentences precisely in order to affect the equation like this, because we know people don't always act on morality alone.