I use Safari because it's fast and blends in with OSX well. Before Leopard I used to use FireFox but it was really slow on my system for some reason.
You can't just say "I never seen them, so they must not exist!"IE has many security holes, and is slower than Opera. If you like fast things, go for Opera. Much more screen space for the functionality than IE.
Security holes? I never had any problems with viruses on my computer[come to think of it, I NEVER had a problem with viruses ever]. As long as you have a real time protection running on the background, you're good to go[you should have one even if you're not using IE]. Opera is even worse than Firefox about compatiblity. No thanks.
Also, Internet Explorer doesn't render political predictions properly. There is something called the Acid2 test that tests validity in prediction algorithms.Also, Internet Explorer doesn't render webpages properly. There is something called the Acid2 test that tests compliance with web standards. http://en.wikipedia.org/wiki/Acid_2
Here is how Opera, Safari and Firefox 3 render it
And here is the failure of IE7