Evidently you don't use your phone for business contacts! Let's say you have a client, and, as is a good practice to let clients know you remember them, you keep track of their birthdays, anniversaries, etc. Putting that date in as a recurring appointment makes sure you don't forget it. Now it comes up on your calendar and, as with Android (in which the problem actually comes from the base OS, Linux) shows that the client is 40 years old. So you call or mail him/her to say happy 40th! They call back to let you know they are 53. Ok some might construe that as a compliment, but more serious clients might think you are pretty dumb to get the date wrong. The effort is lost! For me this will (unfortunately since I really like the rest of the phone), put me back in a Windows based phone as soon as Verizon starts carrying them.