I am getting fed up of people using JavaScript engine speeds to decide which is the better browser. There is milliseconds between in real life applications if that. The SunSpider test uses a lot of heavy JavaScript to really push the browser. By All accounts the engine in Firefox 4 is faster than V8 and Opera has their new JavaScript engine in alpha not to mention their new Presto engine.
I remember the good old Spectrum/Commodore days of waiting for your programs to load from an audio tape. I also remember the dial up days, now long gone for me, where you could be waiting up to a minute for a badly designed image heavy site to load. These days people want everything instantly. So they get everything happening fast, emails read and replied to, banking done and so on. What did they rush all this to go and do? Usually either sit in front of the TV or go on Facebook for an hour or two.