I'm not saying "tougher laws are not effective."
I'm saying that a society in which people are killed, tortured and maimed for breaking laws is not a society that maximizes human flourishing, happiness, health and liberty. I'm saying such a society is a violent society. You seem to think it's a less violent society than one in which people are tortured, killed or maimed for breaking laws, which is generally not borne out in reality, historically speaking. It just makes for a crappy society in which people can have their lives taken, and/or their bodies mangled for any number of non-violent crimes. Which to me, is an infringement upon human rights. I don't want to live in a society that places such low value on human life.