The list of bugfixes is hardly nothing:
http://www.mozilla.com/en-US/firefox/5.0beta/releasenotes/bu...
Who care's if Mozilla has more extensions? They cause too much trouble when you upgrade.
http://blog.mozilla.com/addons/2011/04/19/add-on-compatibili...
Exactly. I switched to Chrome because of this and Chrome's better (less buggy!) Sync features.
I do. TreeStyleTab and Pentadactyl essentially change Firefox into a different browser that I much prefer. There's nothing like that on Chrome, and until they get better capabilities for extension writing, there won't be. The day when they have working full replacements (not Vimium and the mediocre sidetabs option), I'll happily switch to Chrome, but until then I'll take having my nice customized browser.