I have been using FF for what seems forever, and I have no plans on stopping... unless they shut it down, finger crossed that that won't happen! I'm a web developer, and it has always been my go to browser, to me it has always felt pretty fast and I actually have never had any problems so I am always baffled how other people always have issues with it, maybe I am just an edge case. AS of now, it has been my default browser for well over 10 years, on both mac and window machines. I will continue to be a loyal user as long as it continues it's current course. I really wish Microsoft had gone with Quantum Gecko.