"If one imitates another folk he will be from them." (HR Imam Abu Dawud)
Muslim males are not allowed to wear earring, however there are Muslims who still wear earring although they know this prohibition. They are Muslim who neglect rule of halal and haram in Islam.
Young bro, if you wear earring on your left ear, first, you would become one of rockers. Second, you would become one of Muslim folk who neglect rule of halal and haram.
So, still want to wear earring on your left ear?.