Firefox vs IE7… Convince me

I’m starting this discussion after reading the posts about Opera being the fastest browser on the internet.

It got me to thinking, I’ve toyed with Firefox and I primarily use IE7. So I am asking those that know, why should I use FF over IE7?

Please I am not interested in hearing I should use it because Microsoft is evil or any of those types of boring arguments. I am asking with an open mind… what’s in it for me if I switch?