My beef has always been "You murdered those people. That was wrong, so we're going to murder you. But, like, it's cool when we do it."

“Way more common” than what? In the modern era with DNA the requirement for convictions are extremely high. Not saying it won’t happen, but one thing I definitely recommend is reading some of the current death row inmate court summaries in say Texas to see what we’re really talking about. But yes in some capacity it could happen. However none of this is actually relevant to what was being discussed which was an earlier post’s poorly reasoned argument that life sentence was somehow worse. Which brings another point. Clearly if you believe in prison you have to accept that at some point someone will be innocently held for life. Also morally wrong, and apparently by the earlier post’s weak logic, worse. Legalizing drivers licenses means inevitably a child will get run down by someone late for work or texting while driving. A proper discussion needs more than platitudes.