... with judges explaining their non-judgements with some totally rediculous arguments like: he has already suffered the worst... having to live with the fact he klilled someone, so there's no reason for further punshment.

But there was a case where someone was convicted for murder because he was involved in an illegal car race and should have known better. Yes, illegal car races are a thing in Germany

Edit: This isn't the case I had in mind. I remember vague that the victim was an (elderly) man