Dates Start With One

Why is it that everyone seems to ignore the the fact that dates always count from one? There was no year zero. There was no century zero. Therefore the year 2000 was still the 20th century and 2010, not 2009, is the final year of the decade now dubbed "the noughties."

This is an example of how inaccurate information becomes accepted as a fact. Unfortunately, I see no way to correct this misinformation as long as everybody keeps spreading it around like a virus.