Not because I don't think the decade is necessarily going to be unhappy (although there is at least some chance of that, let's face it) but because the 2010s began in 2010, not 2011.
Yes, I know: cue flame war from the people who missed out on the party of a lifetime on December 31st, 1999 because "the millennium started in 2001". You poor bastards. My advice - always - is to take to the streets first chance you get.
So why didn't the decade start in 2009 then? Because that would have been damn silly.