I've been using Firefox for ages now but, after a lot of trouble with it that forced casual use of Google Chrome, I uninstalled it this evening. I've been having a lot of problems with my computer - my internet connection will drop without warning, at which point the computer will often refuse to shut down, or at least wait 5-10 minutes between clicking 'shut down' and actually shutting down. I find myself turning the computer off at the wall several times a day as a result.
Well... I opened Firefox today to find it had reverted to some older settings or something, so I uninstalled it. The connection hasn't dropped since, leading me to believe that Firefox was the cause. So yeah, I'm sticking with Chrome at the moment - despite the handful of little quirks that make me want to scream, at least it works.
I'll probably reinstall Firefox at some point, perhaps in a month or so when I'm done with studying and such.