To Firefox or Not To Firefox???

I downloaded the Firefox browser yesterday and have been trying it out. I've heard some good things about it, but I'm not sure if I see enough of a difference to make me want to switch completely. My blogs and others look the same and I never had a problem with Internet Explorer freezing up on me. My daughter hates Firefox, my son loves it. So for all of you out there, I have some questions:
Which one do you like better, Firefox, or Internet Explorer? What do you like about them? What do you not like? Which one do you use and why? I would really love your opinions!