Parenting (Score 0, Redundant)

My problem is with the parents. Nearly all video games are ESRB rated in the UK, with a 'suggested' age. The games that contain violence, nudity, sex and language are normally rated 15+ or higher Why are parents buying their youngsters games rated like this? A while back, during all the GTA noise an old woman complained becuase she thought the game was innapropriate for her grandson. Well duh, it's rated 18+.