The object of most games in which opponents play against one another is to WIN. If you don't play to win, then why bother to play? Good sportmanship means that each player competes within the rules. There is absolutely NOTHING wrong with capitalizing on an opponent's mistake to gain an advantage in a competitive game. This bleating about it not being "fair" to take ball in hand, combo the 9 ball, snooker etc, is just plain ignorant. Imagine in American basball, if someone suggested it was "unfair" to advance to second base because the outfielder committed an error and dropped the ball. "OOPsie, the outfielder dropped the ball.. but I better be nice and just stay here at first base." Or for those of you who like football (soccer)... imagine, the striker kicks the ball, the goalie stops the ball but drops it in range of the striker to kick it in... but NOOOOOO... better be "fair" and politely give the ball back to the goalie. Ridiculous isn't it? But what many of you suggest for pool is no different.. and just as silly.
Good defense, including snookering your opponent and playing safe when you don't have a good shot is an ESSENTIAL part of skillful billiards play. All you have to do is watch a few pro matches to see that.
I would suggest that contrary to what they claim, the people whining about defensive play being unfair aren't really interested in fairness at all but are actually incapable or unwilling to play intelligently themselves and are trying to gain an unfair (and unearned) advantage for themselves by conning people in the "fair play" nonsense.
I agree wholeheartedly with a previous post that aptly and succinctly hits the nail on the head with, "You say, "play fair'" I say, "Don't miss." To which I might add, don't miss and don't whine when your own mistakes cost you a game.
PS Beppe, you're a a little off base... unsportsmanlike conduct is against FlyOrDie rules... playing BY the rules isn't. *see above.