Wait, what's internet explorer again?
...
OH!!! You mean that thing, the icon that's sulking somewhere amidst the "All Programs" because it's a slow and unreliable mess!
In all seriousness, Microsoft has been very lax in updating IE to be as user-friendly as Firefox (the only one I use, so I can't speak for the other browsers). The addons alone make me detest going back to IE, what with the pop-ups, disorganized tabs, and lack of customization. Plus it always has this feeling of trying too hard to be "secure" while not really doing that good of a job (like Vista).