I don't think that's for any of us to say. And for all the terrible things that he did, there is a family left behind. For them, it's not as easy as dusting off your hands and saying, "Well, we're all better off with him gone." and forgetting he ever existed. All they get is questions that can't be answered and a world of guilt and regret to deal with. He leaves behind a huge mess, and now there's no chance he ever fixes any of it. He may never have anyway serving out a life sentence, but there's no way of knowing that. He was only what, 27 years old? Most people don't change; I'm not naive. But age lends perspective. Maybe down the line he could have done something positive, even if it was something as simple as serving as a speaker/cautionary tale for at risk kids or something like that.
Don't get me wrong. I don't condone anything he did or was accused of, and I'm not trying to defend him. But I don't see the value in joking about his death or passing it off as good for the taxpayers or good for the world. This is a ****** ending to a sad story. Nothing "good" about it.