are you presenting the premise that the state should determine this? or just your gang? or the mob rule of wherever you live?
which is it?
among states, the age of consent differs.
so who should decide?
the individual or individual unit-the family, or the collective-the state, or whatever gang happens to be in power?
surely you dont mean to imply by your answer that there IS an objective morality, which follows from an objective libertarian society?