I use DuckDuckGo as my default at home but I find myself reverting to google for some stuff, which I actually really hate. I wish that other companies would step it up because I really don't like relying on Google for things as private as email and searching.
Google is really good if you are looking for 'technical' results.
Bing is actually really good for everything else.
I would challenge everyone to switch to Bing for 3 months without deviation.
After 3 months go back to Google. See which one is better.
A lot of it is preconceived notions.