It's Like Being Given 3 Billion Skittles to Choose From

And only being allowed to eat one. So you start looking for the right Skittle for you.

Only to find out that your culture accepts only 1/2 of 1% of those available.

Then you find half of those left are riddled with holes.

And half of those left don't look so hot.

And half of those left are being eaten by someone else.

As Wolvey said on the way home from work the other day, "There aren't a lot of halves left."