Children are not permitted by law to decide for themselves to smoke cigarettes , drink alcohol , drive a car, runaway from home ; have sex ! how may they be permitted to decide for themselves to take cross-hormones or mutilate their gentalia ?

Children are not permitted by law to decide for themselves to smoke cigarettes , drink alcohol , drive a car, runaway from home ; have sex ! how may they be permitted to decide for themselves to take cross-hormones or mutilate their gentalia ?