If there any reason why you can not use more than one browser? No. A lot of folks get caught up in being “uber fans” though and don’t realize that all browsers have some good points and some bad points. This article I found yesterday really got me to thinking – it might have the same effect on you as well.
Naturally, all of this has generated a bit of contention among users of Microsoft Windows where Firefox fans put down IE and users of IE 7 say they don’t want to bother with changing anything on their computers that is working. I’m an unlikely Solomon, but I do know what I would order if I were in charge: Use them both.