Internet Explorer is an integral part of Microsoft keeping a backdoor into your computer, hence you can't remove it completely. That's also the reason why the latest service pack for the .NET framework added a Firefox add-on if Firefox was installed, adding a big security vulnerability. When you do a clean upgrade/install of IE7 or IE8, it makes you turn off your antivirus, since Firefox does not make you turn off your antivirus, there's plenty of reason to be suspicious. I don't see any reason why not to force them to include other browsers, and the option to pick one at first run, Microsoft has a monopoly, they should be regulated. If Linux or OSX had atleast 30% marketshare, then Microsoft should be cut slack, but until then, they are a monopoly and should be regulated as such.