This went a little off-topic with the Google monopoly (although 90% of what was said is spot on). Google will ALWAYS look for a way to better push their paid services like Adsense, while justifying what they do for a better, brighter future where the search engine will practically know what we want halfway from typing it. Often resolving to scare tactics and witch hunts they leave obvious loopholes and examples of what should obviously be penalty candidates. But you said, I'll say it, and everyone else will say it - it all comes down to habit! I still get the shivers as to what large portion of people were using IE just because it was the default browser with Windows. But unlike IE, Google doesn't seem to have a viable rival to really challenge their service and makes them want to improve for the end-user really...
Sooooo, after going off-topic myself, lets get back - second best search engine? I would say Bing. Why?
- image search is better for me, better user experience and preview options
- video search is MUCH better, more structured results and easy preview with a hover (why Google is doing nothing there for so long is beyond me. They now own YouTube for some time and still nothing? Srsly Google?)
- if you are into PPC, Bing is much, much cheaper for executing a PPC campaign. Of course, understandable, as it reaches a far less broader crowd. Still, its good for diversification of marketing efforts
- Dat Homepage Image! Some people like it, some people like the occasional doodles. Me? I love it!