No. But someone is going to say you will lose customers if you don't.
It's time for IE6 to die, already. Those of you who are still using tube monitors and abacuses, please give us a break and come into the 21st century.
As Bobince points out in his comment above, it's unrealistic to put a coat of wax on a VW Beetle, and expect it to look more like a Porsche.