The year 2000 was a fine boundary, because of the mathematics of dates. 2010 seems a little more mathematical, in that the century count is double that of the year count. 2000 however exposed a hole in thinking shared by everyone who entered a two figure date into their computers. Time marches on, and it is necessary to record the details.
The 2000 decade was the decade that Tony Blair and GW Bush decided that the Geneva Convention prevented them from dealing with the threat of Iraq. There is a movement to bring them to justice as their actions were not legal or desirable.