Firefox vs. IE

Well I was looking over my traffic the past few days and I came across some interesting information, more people are viewing my site in firefox than IE.  This really suprised me because IE comes with almost every PC you buy (with windows).  You have to download and install firefox.  This tell you one of 2 things either IE is really bad or firefox is really good.  To be honest the only thing I use IE for is windows update and sometimes if I am doing some webdesign I will see if the page looks the same in IE.  I really enjoy firefox and all of the extensions you can dowload (for free).  Now just because more people are viewing my site in firefox does not me that will be the case for other sites.  My site is a tech site so most of the readers have heard of firefox and know how to download and install it.  If you site has to do with sports or gardening then you might have more people viewing it in IE.  It just thought it was interesting that more people are using firefox than IE.