The first browser I used was Lynx, but that was way before all you rotten kids and sales people started that dot-com rot.
These days, I have to use IE for work stuff, but I never use it for personal business because I fiercely oppose Microsoft's decision to marry web browsing with their OS code for both political-economic and technical reasons.
I've also 'had to use' FireFox for Stardock sites because I somehow can't get my preferred browser, Opera, to let me sign in. That pissed me off for rather a while, mostly because I'm pretty sure something I did is behind the problem, but since I was already 'forced' to use two browsers, another one was not such a big deal.
I got turned onto Opera quite a few years ago by a co-worker who appreciated their implementation of tabbed browsing, which IE eventually adopted also. The thing that kept me with them from the beginning was zoom functionality. FF is finally about as good at zooming as Opera, but IE is still way, way behind, at least on the work-related sites I need to view in IE.
My very favorite thing about Opera is that it is the most privacy-friendly browser I know. Not only can you set it to dump cookies with every session or purge all your private data mid-session, you can block content from specific sites, e.g. googleanalytics.com. I know I have little real hope of online privacy unti we get decent public policy in the US, but I like to pretend.