Personally what I think is cloning can be a very helpful scientific achievement for making different kind of organs for transplantation..I wud better compare it with nuclear power..as we know electricity- a good use of it can be for the improvement of mankind..on the other hand the same nuclear power or knowledge can lead us to deadly atomic bombs ..u wud never know when u can bring mankind to an end. Similiarly if cloning goes in wrong hands they r no less dangerous than dirty bombs...I think we better watch out for this.