I love Firefox!
The first reason of course is that it's not shoved at me by Microsucks, and then there are many others. One strong reason is add-on's, they are developed by normal people and they are so useful. In this shot you can see how many of them I have installed and active but this is kind of trying out phase, usually I have 2 or 3 that I consider quite essential like a download statusbar, fast video download - to download youtube videos, and google toolbar, of course.
This post is from one add-on called Scribe Fire I have used it before, but now it's new and improved and can handle images easier.
That's my reason to love firefox. What's yours?