As a long time Chrome user, and someone who (admittedly) said to a FF fan about an year ago, that it's too late for FF to catch up to Chrome now. I gave FF another shot about 6 months ago, and I'm liking it more every month since then. It has been my primary browser outside of work, the major reason I use Chrome now is for Chrome Dev Tools. Also, some websites don't behave well in FF and I find that most of the time…
The mere fact that login into Google logs me in Chrome as well made me decide to switch to another browser. It's as simple as that. Google doesn't care about user's privacy.
I switched to Firefox from Chrome a couple of months ago. The sole motivation was the fiasco that ensued after Google decided to mingle Chrome Sync login with accounts.google.com cookies - there is simply no way to sign in to Chrome Sync without creating browser cookies for the same account. I wanted the benefit of saving and syncing bookmarks and extensions across my chrome installations, but I did not want to be tracked across the web with my logged in Google identity and the Chrome changes for "Identity consistency between browser and cookie jar" made it impossible. It was time to move on from Chrome.
And I have been very pleased with the new Firefox. Highly recommend it to everyone!