I can speak for me. I remember my father had been using one all his life. I think it is the risk/danger of handling the razors. Anyone with a small child at home would rather have a wilkinson/gilette that are safes (blade-wise). Also cinema has given those blades a bad name.

Now that you mentioned it though, and especially what temp1831 said ($5 for a year's shave), it just got my attention!