Why Internet Explorer still sucks

If http://people.mozilla.com/~prouget/ie9/ is not enough to convince you, let me show you my experience with the release candidate of IE9 

The error message did not go away. It was a loop of two pop-ups. One had a cancel button while the other had close program and debug buttons. It was a matter of cancel -> close program -> cancel -> close program ... you get the idea.