I know Art was just thinking...."It's just a matter of time before Mark gives his 2 cents here."
First and foremost, I find firefox to be much like CSS only layouts.....a trend.
The majority of the Internet uses Internet Explorer. Whether it be due to preference, or due to the fact it came default with their machine, or due to the fact that they don't know how to kill their hard drive by downloading 30 different browsers, it's fact that the majority is IE users.
Most of the time you'll find that those using FF, Opera, Safari, etc, are those whom are developers.
I actually find Firefox much slower than IE. For me, IE loads instantly, and due to DSL, pages load fast.
Again, it's much like pure css layouts. Yes, after you get past the initial hurdle of loading everything at once (which Firefox does upon starting it up....plugins....addons....other libraries, etc), everything else runs faster.
The fact is Firefox cannot even understand some of the most basic of html, and css.
Other use the argument that people are irritated because they are too lazy to make sure they follow html,css, etc standards.
Well, you'll have to pardon me if I find my website an expression of creativity. After all, that is why it's called website "design." The last time I checked....no one had the authority to put rules and limits on someone's creativity.
Yet, time and time again you find "designers", and developers boasting about these underdeveloped browsers, because they love the limitations it places on their creativity.
The last time I checked....nothing new ever came out of following someone else's standards.