I'm against the Death Penalty on moral grounds in that I think they are state-sanctioned revenge killings, and they typically don't help the victim's family psychologically as seemingly intended. Studies have shown it is not a deterrent. It's very obvious that it is applied to minorities at a much higher rate than to white people. 1/25 of those killed were actually innocent of the crime they were convicted of. And now we can't even do this procedure properly.
How many reasons do we need to end this practice? Oh yeah it appeals broadly to tough on crime politicians and the stand your ground-types. This is the mentality that turned America into the biggest prison state in the world by a large margin. If our Supreme Court weren't packed with Bush appointees, we might have a chance to ban the Death Penalty. I doubt it happens for a couple more decades, though.