I do agree but the majority of people still use that thing that killed web design. We know it as Internet Explorer, I know it ass "Pain in My !#$@()* A$$!!"
My opinion is that you want your site to view correctly in Firefox, IE as well as Safari and Opera. Every other browser as well but those four are used commonly. IE is still used a lot more than the other three and it also has the most bugs.
What I hate more about IE is the goddamn head developer of the bloody thing uses Firefox. I MEAN SERIOUSLY, WHAT THE HELL?!