You have to try it to see and feel the difference. My reasons are: Safer, faster, easier to handle, more reliable and open source software, thus not dependent of the big bad Microsoft Corporation.
Here are some articles that I Googled for you:
http://www.itvoir.com/portal/boxx/knowledgebase.asp?iid=717&Cat=3 "The advent of Firefox freed the users from the chaotic experience of surfing many sites at a time. It introduced the consumers with a neat experience of TABS, opening many sites at a time and viewing them simultaneously."
"The shift is from the ease of experience to security factor."
"The other pleasing factor that enhances the browsing experience is the pop up blocker. It blocks the pop up but gives an option to look them if one really wishes to."
http://www.techsupportalert.com/firefox.htm Three Good Reasons to Abandon Internet Explorer:1. It's an ongoing security risk:Even the most one-eyed Microsoft supporter would have to accept that IE has been plagued with security problems.
2. If you are not using Windows XP, Microsoft has abandoned you:Internet Explorer 7 is only available to those using Windows XP SP2 or later.
3. Internet Explorer is less configurable than Firefox:Although IE7 now offers a useful collection of add-ons that allow you to customize your browsing experience the number of such add-ons just can't compare to the 1000+ free extensions available for Firefox.
Three Good Reasons to Stay with Internet Explorer:1. Some web sites won't work properly with Firefox:A number of web sites utilize non-standard, proprietary Microsoft features such as ActiveX in order to provide site navigation and other features. It's probably not a good web design practice but that doesn't stop people doing it.
2. Firefox loads slower than Internet Explorer and takes more memory:IE's better performance here is to some degree an illusion. That's because some of the major components of Internet Explorer are always running on your PC, they are pre-loaded when Windows starts. That means IE has less work to do when it starts so it loads quicker. It also means that IE actually takes up more memory than it appears to.
3. Firefox has had its own security problems:This may be so but Mozilla have to be commended how quickly they have released patches for newly discovered flaws, often only a day or two after the flaw was first demonstrated. This is in sharp contrast to Microsoft's tardy response to fixing IE problems.
http://arstechnica.com/news.ars/post/200...-and-opera.html Firefox 3 goes on a diet, eats less memory than IE and Opera
http://blog.washingtonpost.com/securityfix/2007/01/internet_explorer_unsafe_for_2.html Internet Explorer Unsafe for 284 Days in 2006For a total 284 days in 2006 (or more than nine months out of the year), exploit code for known, unpatched critical flaws in pre-IE7 versions of the browser was publicly available on the Internet. Likewise, there were at least 98 days last year in which no software fixes from Microsoft were available to fix IE flaws that criminals were actively using to steal personal and financial data from users.
In contrast, Internet Explorer's closest competitor in terms of market share
-- Mozilla's Firefox browser -- experienced a single period lasting just nine days last year in which exploit code for a serious security hole was posted online before Mozilla shipped a patch to remedy the problem.
I did my best accurately answering your question Simon; I hope this helps.