Its one thing that really chaps my hide. Were either adults at that age or not. So, if you commit a crime at 18 or older, your an adult. no special cases
If you commit a crime at 18 or younger, youre a child. There should be harsh penalties for violent crimes and murder
Same thing with other stuff-
Buy all available guns at 18
Buy liquor, tobacco, legal weed at 18
Vote at 18
Join the military/draft list at 18
And so on and so forth.
If were not going to consider 18 year olds as children, they shouldn't be considered children. If that needs to increase to 21, then so be it. But make it consistent