What someone thinks is appropriate for a child to play and what children find appealing to play do not always exist in harmony. And yeah kids shouldn't play a game like Grand Theft Auto but holy shit was everyone in elementary school obsessed with playing it or trying to find a way to get a copy of their own to sneak home somehow.dang i guess thats why 99% of all games that come out are rated M. that hasnt been true in a long time man.
They are rated to satiate lobbyists who wanted to have the government step in and judge the content. It is not a seal of proof showing you who the game is marketed towards.