This one will call for some deep thought. I figure the hydrocodone I took a few hours ago should be enough of a mental spur for a halfway intelligent answer - I think.
Part of the problem - hence the solution - lies in the cheapening in the value of human life that has occurred in our culture. This begins with our attitude toward a certain class of person who hasn't drawn a breath yet. Euthenasia for "useless" elderly was once practiced in the "civilized" West, and this is nothing more than a logical extension of the aforementioned attitude toward those on the other end of the age scale. Add in what young people are exposed to in many PlayStation games, with their speed and pace and "excitement," with no thought to the consequences for the driver of that vehicle you just forced off the road, or the person you just shot/blew up/burned/dissolved/etc etc etc. I remember when there was a series of complaints some years ago about the old WB and Hanna-Barbera cartoons being "too violent" for children, hence they were pulled. You can't see Wile E. Coyote get blown up or run off a cliff any more - only now we've substituted even wilder violence on a device that uses the TV as a medium to display even worse mayhem. Even in the old cartoons there was no blood, or body parts - the character just got a blasted look, their hair/ears all askew - but they came back after cleaning up. Now you can see the technicolor details. Just saw an ad this weekend about some little bitty thing with little bitty clothes, sucking on a lollipop, who slaughters zombies using all kinds of devices and methods. That's my point. Go to any game store or WM and look at the computer games or X-Box games section. Scary.
Another part lies in unevenly applied very severe penalties for the unlawful taking of human life. Extreme effort must be expended by governments to prove an individual took someone else's life without justification, to preclude an unjust conviction for homicide. However, once it is proven beyond any conceivable shadow of a doubt the penalty should be administered swiftly, and every state needs to have the same penalty. Of course they never will - but we're talking about an "ideal" world, aren't we?
Dad was part of a generation that sent many of its members to deal with ideologies and governments that had cheapened human life to a frightening degree. He detested what he had to do but became awesomely good at it because he knew it would bring what he was fighting to an end. Once it was over he wanted nothing more to do with it. He hated unnecessary violence; for example, if watching old WWI or WWII films and an airplane spun down or plunged to impact with the earth he never failed to state there was a man in that airplane. Look at the social mores of the time of his adolescence and you can see they were totally different from what they are now - much more liberal now, hence the subject of the mores is cheapened.
There was more religiosity when he was growing up - more people were "churched," and churches were strong and well-grounded - that helped, too. The churches uniformly had the same concept of the value of human life, and expected you as a member to conform to their values - rather than the exact opposite which it has devolved to now.
We've also isolated our young people from real death - from attendance at funerals even to how we refer to death - "passing" - "pass away" - "move on" - and any other synonym you care to use, instead of using the words "die" or "died." They just don't sense the terrible finality of death. Assigning a pettiness to death through how it's portrayed in popular film or video entertainment worsens the problem.
Public executions were tried in Britain back in the 1700s and 1800s but all they succeeded in doing was drawing a crowd of otherwise bored people.
Don't want to bend your ear any more, but this goes way beyond just a quickly-administered public penalty, however justly and richly deserved. My point is this sickness goes very deep into our younger people in this culture, and in many ways it's not their fault at all - it's ours.
