We need to quit wasting time and resources on these type of shooters and bad people get them gone and let’s grow better as a civilization.

While I understand your position, I disagree. Instead of death, if we do our best to learn about these people and prevent further destruction we’ll all be better off (if that means life imprisonment, then so be it). I’m sure there are plenty of criminologists willing to curate that knowledge.

If we learn more about them, then we gain the tools to grow better as a civilisation as you put it.