I don't want the voting age to be lowered because it would help the wrong side. I also don't see why a person under 18 should earn enough to have to pay taxes. You need to be in school or receive vocational training or do an internship at that age.
Even as a seventeen-year old, my paycheck had FICA deductions. I would also like to point out that several people may graduate high school at seventeen or earlier (as I did; November birthday). That said, obviously, pesky legislation barring children from work is ridiculous, and implies a serious lack of belief in people's ability to work. Teenagers may suck, but we shouldn't prevent the talented or needy from seeking employment. Childhood is mostly an invented phenomenon, no?