Internet Explorer has the highest market share as far as browsers are concerned, and it would be foolish to not make your website compatible with it, but what if you are a Linux user? Should you just switch to Windows for Internet Explorer or for that matter install a virtual machine for a single piece of software?
Usually most of the software you install has an uninstall option in the program menu from where you can easily uninstall the software, but with some softwares like Windows Media Player 11 and Internet Explorer 7 it is not the case.