Thanks for all the great arguments, with such a wide range of people's opinions and views, I'm pretty much ready.
Personally, I believed that the people blaming violent videogames on violent behaviour were totally obsurd and obviously had never played videogames themselves.
What also needs to be considered is "What is violent?" Ban violent videogames, then ban:
-Terminator (example of a film)
-Star Wars (Jedi fights)
-Tom and Jerry (Kids watch this and do NOT swallow objects 3 times their size and start beating their opponents with an arsenal of weapons)
Although I still partially believe this, I think that there is definately a good point to be made by them, but I have any reasons to believe otherwise.
A famous case of violent videogames being blamed is the game Manhunt. The 17 year old who stabbed the boy was mentally unstable before playing the game and would have snapped at any moment, but it was a coincedence that he happened to have played Manhunt.
I'm not saying certificating games is a godsend of a technique to protect people, but they do protect the minds of impressionable children, which I agree with. The rest is the fault of other sources, including parents and the media (not necessarily both or either).
Sometime ago, a boy shot at a car with a shotgun and eventually caused it to blow up. He blamed it on GTA. Although unmentioned on the news following the event, it was found that he said "in GTA, the cars don't blow up". The people who blamed Grand Theft Auto for this obviously never played the game because in the game, cars do blow up.
People affected by violent videogame banning:-
-developers (lose of millions, maybe billions and bankrupcy)
-psychopaths (need to find something else to occupy them)
-normal people (turn to beating up old people for fun, 'cos no more GTA)
-me (I matter

)
I find all types of games to be stress relieving. I remember that when I used to ever get frustrated at a game, I would always come off and act as if nothing happened.
(note that I said used to. I now play games and never get frustrated. When playing my friends copy of Doom 3, I cycled through the weapons and tried playing the level punching monsters

)
Woah! didn't expect to type that much.
Closing statement

:
I'm a moderately well-behaved Christian boy who has played a few "violent" games, and never have I attacked anyone :roll: . The psychological affect of videogames is no more than that of the media and effects only the weak minded.
Better get out of school before they kick me out