5 year olds take on GTA (watching, not playing, her controller dexterity is frankly shameful...)
"What do you think this game is about? "
" You punch people then run away. "
" do you like the game? "
" yeah it's funny! Punch that one! "
" would you ever do that for real? "
" No daddy that's not nice it could hurt someone!! "
" You said it was funny... "
" Daddy! That's just a game! "
Just about sums the whole issue up for me really. Maybe don't let thick kids play games? Most kids are perfectly capable of making the distinction.
I'm not a fan of age ratings in general, I watched a lot of 15 and 18 rated films from around age 8... I despised kids films. Which ironically, I now quite like (both my daughters abandonned "How To Train Your Dragon" and I ended up watching it alone. Same with "Wreck It Ralph"

).
But my favourites included things like Terminator 2, Total Recall, Robocop, Rambo 1 and 2... You may be beginning to see the 80's action theme... Haha. But yes, anyway. Individuality. Age ratings are arbitrary and nonsensical. Parents shouldn't force their kids to grow up too soon, but nor should they shelter them and try to keep them childlike for as long as possible.