Hi Linda! That's an intersting question that you pose: Is it worth it to have ethics given that criminals seem to be cosseted by the legal system while the victims are left to deal with blame and possibly shattered lives.
This is simply my own personal stance: I've been there...the shattered part, I mean...and I don't care how much cosseting my victimizer gets, I will NEVER give him the satisfaction of giving away, mangeling or destroying my ethics. They are part of me; he will never again have the ability to destroy any part of me, including my ethics.
I know the rankling of injustice, but truth be told, IMO, the world was, is, and always has been injust. What really matters is less what the external world does, but what we do within and about ourselves.