habits are illegal for childs
Then why am I not arrested yet?
On a side note, ESRB and PEGI are there to help inform you about your choice of game. You, or your parent/legal guardian, may choose to ignore or acknowledge the warning as you wish. The reason most game stores do not allow children to buy M or AO games on their own is because they do not want the children's parents complaining to the store. The same concept follows for movie ratings.
Because of this, I don't understand why you are making a big deal out of the ratings, or why you think it ruined GTA.