Why are people using other Browsers? I admit I am not at all tek savey. So why go to others....
Are you asking why people don’t use IE?
MSIE is THE target browser for every crack pot in the world. Look at the zillions of security updates for MSIE. I only use MSIE for microsoft updates. That’s it. For everything else I use Firefox or Chrome. I have a household network of 7 XP Pro computers and they all run Firefox flawlessly. Only loaded Chrome 3 weeks ago on one of my machines and it has been fine so far.
It's the "I'm cooler than you" syndrome.
Closely akin to "Mac users rule" complex.
Back in the 60's it was Ford vs Chevy vs Dodge.
Nor orthographically savvy, but we're laughing with you, not at you.
I use whatever suits me at the time. For the moment, I am using Chrome. I came to chrome back when IE, and even Firefox, became bloated, slow, and cumbersome. I maintain several PC's, most of which were around 5 years old, and their speed and memory was a bit limited. Chrome is snappy and fast. IE9 and the newer Firefox are much improved now on speed, but I tend to stick with Chrome for now, because there is no reason to change. I keep IE and FF installed and updated on all computers, so I can use whatever I want. My young son recently got into Opera, and it runs well too. I was a browser junkie for a while, had to have every mainstream browser installed, but now I just use whatever works best for me, for the tasks at hand. I'm not a fanboi or a hater any more.
The main problem with IE all along is ActiveX - A subsystem of IE, (also used by OE, and WiMP,) which allows installation from the web and such. ActiveX is the single most exploited (and exploitable) thing on the planet. It's security is like a steel sieve.
All other browsers use Java instead, which also can be exploited, but no where near as many or as easily as ActiveX. If you have problems with viruses and adware, about 85% of your exposure will be resolved by simple using a different browser (Firefox: Mozilla, mo' bedda).
And with a few well placed add-ons in firefox, you will have a very quick and useable remedy.