In everyday business, when dealing with dates, the month is usually what you care about most, followed by the day, and then the year (which is often redundant or implicit).

Thus, month/date/years is more "ergonomic" or "user friendly," if one is equally used to either format.

A similar example is time. The hour is usually what you care about most, followed by the minutes, with seconds most often being irrelevant. Fortunately, that's how everyone writes time.