I am a firefox addict, mostly because of the speed, every time i try internet explorer (in public computers), i feel like i have to put up with a tortoise. The security part of firefox, I wouldn't say i am a security freak, but firefox has been receiving good reviews about its security (expect for the one hole, that they hastily fixed) since i can remember. So firefox for me!
I've always used Firefox in the past. It was and still is the greatest browser out there. However, once IE7 came out i decided to use that instead of Firefox. It's odd have 2 browsers and then sometimes having 2 different ones open by mistake. Plus whenever you open a folder on your desktop, your basically using internet explorer. It's hard to explain, but yeah i use IE7 now. It's just like firefox with the tabs .
I use firefox the most as I love the plugins you can get on it such as the web-developer toolbar, foxytunes, ebay companion and the download status bar. The themes are great as well, I get bored of one very easily, so I end up changing my theme all the time. I'm surprised noone has mention opera yet.
I love Firefox, but I surely hate it when I hit a site that has Java or some other integrated graphics and it reads, "Only compatible with IE 5 or greater". That just tops the cake.
Normally, I just use IE, since it already came with my computer and I don't have to do anything special with it. I have heard lots of great things about Firefox though, so I installed that as well, just don't use it as much. I like the tab feature for IE though and can't help using it often!
i use firefox mainly for the internet but i also use IE though i still use the version 6 and then i also use Opera to see mobile content which is termed as wapsites.
For downloading stuffs i use firefox or Opera because they are way more fast than IE.
IE sucks!!
I use IE but i also have Firefox which is only ever used when i can't get the site on IE, i'm not that familier with the add-ons and such but i prefer IE than Firefox.