There's no point burying your head in the sand. The fact is that between 20 - 30% of internet users still use IE6. Yes. it varies according to target market profiles but if you do some basic research you'll find the average figure above to be correct.
If you're in business and trying to sell a product online for example and you either start forcing your customers to change their behaviour or don't provide them with a satisfactory experience how many goods are you likely to sell? There's a significant proportion of users who simply do not care about 'new technology' they're quite happy performing the same tasks in the manner they're accustomed to. IE 5.5 only disappeared from main stream use (and it is still being used) when the cycle of new hardware/OS 'completed'. In other words IE6 will only stop being used when pc's are changed.
