Clarke should have been banned for what he said to Anderson no wonder behaviour on the pitch at all levels is in decline.
Behaviour in general is in decline, but it's got nothin to do with Clarke's particular instance of 'sledging'. His is merely a symptom of what is happening but you couldn't ban him without banning players like Swann, Anderson, Siddle, Broad, Prior who all can't keep their mouth shut.
Would I like the game to be played in a good spirit, of course, it'd be more enjoyable a game
Do I think it ever will... Not a hope. Football culture is here to stay so we might as well either join in or just accept the foul abuse that will happen every Saturday. I call it abuse because 99%of th time it's not witty, clever or amusing, it's soley aimed at belittling the batsmen, so is abuse not banter or sledging.