The reason Google can give you good results is because of the tracking they do at tailoring the search results to you. DuckDuckGo doesn't do tracking like Google, so it's not going to be tailored to you.
It frustrates me no end to read stupid comments like yours. Of course they use what you freely give them to their advantage. There are plenty of email hosting options, viable search alternatives, viable mapping alternatives etc etc. Google don't have a monopoly on anything. They make you a simple trade; compelling products in return for profiling you, what you say, where you go and what your search intents might be.
I know perfectly well where google's profits come from. Who reading this site doesn't?
As I said, the results can't be tailored to your needs. For instance: when I search Python how does DDG know to bring up? Python can refer to the snake, the programming language, the horror film, the missile, the sports car, the turboprop engine, etc.. DDG doesn't know what I intend. It can try to go off of popularity though, or I have to feed it more keywords for what I'm actually looking for.
Granted other engines can have this issue, but I think DDG more susceptible to this problem.