Here is an article by Yarden on why people are still using old Microsoft Internet Explorer 6 version.
To sum it up:
They Don’t Know What a Browser Is
They Don’t Know That There Are Alternative Browsers
They Are Afraid Of Change
They Thought the Upgrade Notice from Windows Was a Pop-Up Ad
They Don’t Care About Having a “Good Internet Experience”
25.5 % of our site visitors are using Internet Explorer:
Msie 8.0 – 1.7 %
Msie 7.0 – 15.9 %
Msie 6.0 – 7.5 %
About (Author Profile)
Vygantas is a former web designer whose projects are used by companies such as AMD, NVIDIA and departed Westood Studios. Being passionate about software, Vygantas began his journalism career back in 2007 when he founded FavBrowser.com. Having said that, he is also an adrenaline junkie who enjoys good books, fitness activities and Forex trading.