I always use IE 8, because I am lazy.
Every other browser does not log me in automatically to applications running in our domain (Integrated Security). So as a result, I spend the whole day typing passwords,. I do not want that. Neither do I want some browser to remember my password.
And in the end, it's just a browser.
I really couldnt care less. And I really dont understand why all the nerd rage about it?
It's kinda like sex, don't talk about it, just do it!