it is understandable that you were offended. but sometimes the truth hurts. for what its worth, i also asked about the lens hood for my old 100 Macro (different shop, i know them well). i was told "no need". but they explained further "You shoot mostly macros right? a hood would cause shadows since macro shots are shot at close distances. But i know you can shoot portraits with it too, but do you intend to use it for that often?". it brought a smile to my face and i went "Oh yah hor..."! maybe alittle lack of tact in yr case but nonetheless, always feel happy that they're talking to you as a friend rather than a salesman!