Why do you like Firefox over Safari?

I decided to give Firefox a try (based upon another thread where it scored very high in usage). Other then "because I am used to it" why do you like it over Safari? Just wondering (it does seem a little faster).

You might want to check out these threads for some tips/advice/opinions:

http://www.mac-forums.com/forums/showthread.php?t=7456

http://www.mac-forums.com/forums/showthread.php?t=52665