I don't know, maybe I'm just lucky, but I've had explorer(s) for past 10 years and never had a problem with either of them. Hardly any viruses (had some on Win 98 back in the unsafe era) and good performance. I've tried Netscape, Mozilla and Firefox, just for the sake of trying them, but other than testing if my websites run on them smoothly, they've remained unused.

I guess it's just one of those things you either don't care about or hate. (e.g. Windows in general) I for one hate Quicktime and other nuinsense written by Apple, but I'm pretty sure that quite a number of you love iTunes.