It is not just the justice system. After 18, you are given full citizen rights, but you also get the responsibilities that go with it. It is crude but fair. Th

It is not just the justice system. After 18, you are given full citizen rights, but you also get the responsibilities that go with it. It is crude but fair. There are exceptions, adults may have guardians and are effectively considered minors if they have mental problems for instance, and in some cases, children can be emancipated. But these are usually for extreme cases.