I think one of the appeals of baseball, as "America's Pastime", is that winning AT ALL COSTS isn't the central ethos of the sport. Playing the game the "right way" and playing with honor are important, important enough that doing "whatever it takes" is frowned upon in instances like this. The unwritten rules of baseball are things that bring a certain degree of honor to the game, and I understand why so many baseball traditionalists get upset as subsequent generations foul the traditions of the past in the quest to achieve victory regardless of the path taken to get there. This is one of those unwritten rules that I hope never dies.
An extension of "whatever it takes" leads to the use of steroids before the league banned them. Is everyone that is OK with bunting to break up a perfecto also OK with what Bonds, McGuire, Canseco, et al did?