Firefox was late to use multiple threads for the UI so it was horribly slow and hanging every time a page was loading. I think It took them around 2 years to get this done while Chrome was running great.
Even I being a hardcore Firefox user, I went to Chrome for 1 year or so as it was intolerable.
High wasted jeans, they make your legs look too long and your butt to be infinitely high, I still love you though.