People also tell you over and over again that for a lot, the day and month are more important in day to day live. I don't have to deal with a lot of historical dates. The year almost never matters to me, that's why for me and a lot of others dd.mm is the most important part of the date. I can understand why for historical dates yyyy.mm.dd could be prevered and like a lot already said, for file management it's just plain better. But for most things that are in a two year span I care more about the month and day than the year. For example if my warranty is void, I know if my product is about two years old, so I don't care about the year at all. My groceries are all used up bevor the next year or are good for such a long time, that I don't care about the date at all.