Why does everyone keep calling it the 21st century?

The 21st century began on Jan 1st 2001 just as the 20th began on Jan 1st 1901. We start counting from year 1 and always have. It takes a hundred years to merit the label “century”.

It follows then that the first century AD in the Gregorian calendar was from 1 to 100. The 2nd from 101 to 200, and the 20th century from 1901 to 2000. This is perfectly logical and consistent as a labelling system.

Now you want people to count for you too?

You're just as ugly as you are stupid.

The 2020's is the decade we are in. The 21st. Century is the century we are in

1901 to 2000 is the 20th century 2001-2100 is the 21st century, 1801-1900 is the 19th century, 1701-1800 is the 18th century, 1601-1700 is the 17th century, 1501-1600 is the 16th century, 1401-1500 is the 15th century, 1301-1400 is the 14th century, 1201-1300 is the 13th century, 1101-1200 is the 12th century, 1001-1100 is the 11th century, 901-1000 is the 10th century, 801 to 900 is the 9th century, 701 to 800 is the 8th century, 601-700 is the 7th century, 501-600 is the 6th century, 401-500 is the 5th century, 301-400 is the 4th century, 201-300 is the 3rd century, 101-200 is the 2nd century, 1-100 is the 1st century.

Yah ... 8 billion of us are marching in formation and you are the only one in step. 

For the same reason people in the year 50 called it the first century and not the zero century.

Nice selfie by the way.

Old deadass meme. Move on.

DUUUDE!!!  There was a whole CENTURY of years numbered 01,02, ... 99, 100