While in Iraq, I met a number of 18 and 19 year old Americans, some of whom were armed to the teeth and had already become seasoned killers. Imagine one of them getting wounded and being sent home before hitting the age of 20 and being told they are too immature to be trusted with a handgun. Ha!

I always figured that if you were old enough to hold down a regular job and pay taxes and go fight in a war like any other grown up, then you deserved all of the same rights. Seems to me an 18 year old can do a lot more damage with his voting rights than with a 10 round magazine of 9mm. Then again, maybe not. I suppose there's more than one way to influence policy.
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The ultimate result of shielding men from the effects of folly is to fill the world with fools.
-- Herbert Spencer, English Philosopher (1820-1903)