stuck with IE6 for now.
Realistically, we're stuck with IE6 as long as we're stuck with XP.
I browse with firefox, as do many web developers, the stats from 'a site I look after' would be very distorted since a large percentage of them are 'me' thus bumping up the firefox stats hugely, as would the visits of many people I know. W3Schools would also have a more alternate browser bias. Unfortunately IE6 is huge, as I have discovered as many of my clients run IE6 and will immediately point out some quirk I missed.
Fortunately, for the most part, you can put in IF IE and do custom CSS for IE6/7. If you write your sites carefully, you only need to do a very minimum of this, sometimes none at all. My pet hate is the few things that work fine in firefox 2, but broke in firefox 3, or vice versa, since there is no easy way to fix that. Some things you can just rewrite from scratch to work in both, some others don't work quite right in either.
I regularly use IE6/7, firefox 2/3 and Chrome, and I find all of them are deficient in some manner or another. I often lament things in Firefox that IE does better, and vice versa. Chrome just brought another (albeit small) batch of things I had to fix that worked fine in every other browser on Mac/PC.
IE8, I don't care about, I don't care about anything that is incompatible with a browser that is in beta still.
One thing is sure, regardless of which browser you like, my job would be a heap easier if everyone just liked the ONE browser, or hell, maybe even three.
IE6, it would be great to see it die, but since it came as default with XP, we're not going to see the end of it, until we see the end of XP.