IMO - As a child or teenager you try out different personalities, ideas, etc, then look back, say "what was I thinking", and learn a bit about how your own mind

IMO - As a child or teenager you try out different personalities, ideas, etc, then look back, say "what was I thinking", and learn a bit about how your own mind works. Better then, when consequences are small for you and everyone else, than to delay it until adulthood.