Do we? So, as I've mentioned earlier, I know for undisputable fact, that people have been aquitted of charges that they were 100% guilty of. Should I personally trust the justice system there, despite knowing to the contrary?
I could take you back about 6 years, to when I was arrested & charged with GBH. A "witness" to a violent attack, swore blind I was the attacker & the old bill seemed happy with a cut & dry case. Here's the kicker though, I wasn't even in the vicinity on the night that this event happened!! Luckily, after being on bail for a short while, the case fell apart & the charges were rightfully dropped against me. But I wouldn't have liked to see it go all the way, as it seemed the old bill had already made their minds up. As I said, they make mistakes.
Next point, sentencing in this country is farcical and outdated. I could drag up countless cases of murders, rapes & peadophillia (which I consider to be the worst crimes) where the offender is given a minimal sentence. I could, again, speak from experience & recount tales about violent offenders who've had warnings, final warnings & suspended sentences, yet have never set foot inside the steel hotel. I get your point that, that is the law, but that doesn't mean we should be happy about it & certainly shouldn't accept it.
Last point, about rehabilitation, I agree that some criminals deserve a chance after they've served their appropriate sentence. But nonces, rapists & murderers are a scourge and cancer of society & deserve nothing.