Originally Posted by Cynthetiq

So it's the law for selective service, and in some countries mandatory service of armed forces. I'm not so much a fan of the "I can die for my country but I can't have a beer" argument, but it stands in the face of your statement. 18 is an adult, but not adult enough to drink beer.

Shouldn't then by that same rationality, morality, and idenity come into play as well for signing contracts? By your extention 18 year olds should not be allowed to sign binding contracts.