Because of THIS stupid thing...

A vuvuzela, sometimes called a "lepatata" (its Setswana name) or a stadium horn, is a blowing horn, approximately one metre in length, commonly blown by fans at football matches in South Africa. They require some lip and lung strength to blow and emit a loud monotone like a foghorn or an elephant
It is quite simply the most annoying thing I have ever heard and gives me a headache.
Tried to watch S. Africa vs. Mexico yest. and just now tried watching Greece vs. S. Korea and it ain't gonna happen.
FIFA screwed the pooch when they opted to allow this in the 2010 World Cup and it is gonna cost them viewers.
(me for one)
I was looking forward to watching the WC this year but if I have to listen to that blaring drone of a noise i'm "out".
Maybe next World Cup.