I used IE faithfully for YEARS! Never thought about going away from it. however, some of the people on this forum convinced me to switch and I am hooked. I can't explain exactly why, but I seem to like it better now.
The add-ons are the bomb.
There are problems with the forums sometimes, but most can be fixed with the BBCode Xtra add-on. The smiley thing that Madison mentioned is the biggest thing that annoys me though.