My friends and I have played a million hours of Settlers of Catan but once we used machined dice from a casino in Vegas and they absolutely revolted, refusing t

My friends and I have played a million hours of Settlers of Catan but once we used machined dice from a casino in Vegas and they absolutely revolted, refusing to play until we replaced the dice. The robber, 7, was being rolled so many times and they weren't used to it all. They hated it! It almost seems like the imperfect dice are intentional.