I agree, the main reason I'm using firefox is the extensions too. My main problem with firefox is somewhat different from yours, however. I am still using 1.5 (I'm afraid to go to FF2), and even it is not that stable. The absolute worst problem with it is that sometimes it just sits there when I click on a link. The
status bar says something like "connecting to xyz.com" or somesuch, and then it waits. If I crank up another browser like Safari or Konqueror and go to the same link, the connection is instantaneous. This problem is crippling at times, especially when a site has lots of little things to fetch before it can be rendered.
I have seriously thought about dumping firefox forever because of this, but I wish they would just fix the problem before adding all this other cruft that just makes the problem worse. I'm not sure I will ever make the leap to FF2 unless they spend some quality time fixing this issue.