Entering into the thread kinda late, but--
I don't believe in capital punishment. I believe it has an inherent aspect of vengeance in it and is uncivilised. What’s more the point that it is a wrong that cannot be legally rectified (as in the case of wrongful executions) is a pretty good point – it would be better to see one hundred criminals walk free than to see one innocent man go to the gallows. A few people believe they had it coming… who has the right to make that judgement? I don’t believe that any judge has the right to essentially erase someone’s entire existence.
I also don’t believe prison should be seen as a way of reforming criminals. The reason behind punishments is to punish people for a wrong against the people or the state. To attempt to reform someone is forcing your will upon them, and I don’t believe that is right. While it’s all well and good to stop someone breaking the law, trying to change their personality in the name of the state isn’t.