I stopped using IE in 2001 or 2002 when a worm (Bugbear, if I remember correctly) luckily crashed before my very eyes, so I searched the net to know the risks I took and I discovered that although I selected the option to never memorize passwords and other sensible data, IE memorized them anyway in index.dat, and not even encrypted, only obfuscated (and it was also extremely difficult for a normal user to erase it).
So I switched to Mozilla and years after to Firefox. Now I surf the net almost only with FF on Linux (but I have a unified profile for FF and TB both for Windows and Linux, it was easier than I thought to do it).

I used Outlook Express another year, patching it regularly, and with strict settings for attachments, but abandoned it when I tried Mozilla's much more powerful filters.

Now I use IE only for MS Update and a pair of Active-X-only online antiviruses I use every now and then to double-check the resident antivirus' work.

I use Firefox

IE 6, works fine for me.

Netscape.

I use IE rarely to either watch vids that netscape can't display or download vids in flash with the new free download feature real player has. Had too many problems with IE in the past. I had one or two with netscape before but IE in the past was crashing like every 30 minutes.

I run the most uberist browser of all. Opera.

I think it's quite funny that alot of people always seem to put up a fight when they're asked to switch to either Fx or Opera, yet when they do, they very rarely go back.

Firefox

Opera isn't free software*. Firefox Iceweasel is. Other than that I see no real differences. Therefore FF > Opera.

*Free as in freedom

From reading all of these posts, I guess I can say I'm the first one to admit to using SeaMonkey.

I don't know what you mean by freedom. But I can customize my toolbar ;)

I used to use Fx, but I feel for Opera after liking little features like the speed dial, muting, and E2BN get-arounds. 

I still use explorer...