For me it just depends upon the type of site I'm working on.

In these competitive times you need to support as close to 100% of the sites user base as possible. If the site drops 10-12% to a rival because it lacks ie6 support thats not going to go down well at all.

I do like the car analogy, but if you have a 25 year old car & you can't get a newer one, it's rather harsh. You can get away with it as long as the percentage is low enough.

On backends (cms/admin areas etc) then this is were you can specify what browser can be used and ignore ie6 as long as you can explain why.

For my work projects ie6 is a must as it still registers around 10% of visitors. Personal projects tend to be more techy with virtually 0% ie6, so no need to support it.

I look forward to when I can ignore ie6 completely!