That's the state of the system right now, but it doesn't have to stay this way. It doesn't look like there's much hope for it given the current political direct

That's the state of the system right now, but it doesn't have to stay this way. It doesn't look like there's much hope for it given the current political direction, but it's possible that the system will improve over the coming decades. An innocent person sentenced to prison today can still be released at that point, but an innocent person murdered by the state can't be unmurdered. And while I can't imagine what it would be like to be locked up for such a long time while innocent, I doubt every such innocent prisoner would prefer being dead.