This is not about liking the visual style of the webpage(google vs bing) or how it looks. This is about quality of results and me saving time.
This is not about me being lazy not doing "good search queries". If I can search google and get a result in 5 seconds, why would I spend 1 minute figuring out the best way to phrase something, then 3 more minutes trying different things that Bing would understand? I know there is enough information in my search, because Google understands it. Why should I add more words to it (and sometimes operators) for Bing to get it? Why should I waste my time for no reason? This does not hinder my thinking ability. It's just that Google is so good that it knows what I am thinking before I am completely done with formulating the thought. Damn, sometimes I am on a wikipedia page, I stumble upon a 4-word term unknown to me in that page, I start typing it and Google knows after 2 letters, it shows the whole complete term as a suggestion! And this happens with terms starting with very common words, so it's very likely that google just knows that most people google that exact thing after going to the Wikipedia page (since google sends me to wikipedia page from the beginning). When Bing will do these little things to aid my work, I will gladly switch.
I did try, and I do wish that Bing will get better. Right now it is simply not.
(Yes, I know there are privacy implications, and those suck. But we were talking about quality of searching...)
Plus, people know that google search is the best, so why use something else? The problem is that they seem to "know" in the same sense that they know Kleenex are the best tissues; its all marketing.