Single GREATEST quote EVER
I was reading Throwing tables out the window when I got to this:
IE interprets CSS more loosely than other browsers that have been iterating versions over the last couple years (Mozilla, Firefox, Safari, Opera…). Starting with IE means fewer problems with development work will be detected early on. Developing for IE initially, then trying to retrofit for other browsers will increase time and cost in the long run. But there’s a better way to approach development that’s faster and less costly.
Doesn't get much clearer than that.