Rikkitic:
I agree with your reasoning but if it is to be applied logically, the voting age should actually be set at about 25 years, which is about when the brain stops developing and individual judgement from life experience is as good as it ever will be until advanced middle age.
I'd be fine with that as well.
The drinking age, and the voting age should be increased to 20.
Not many people under that age show the maturity to do either of those things responsibly.
There are other groups of people who vote who probably shouldn't, but there probably isn't any way to get that to happen.


