Why I stopped using DuckDuckGo
murtali.com
murtali.com
I have also found DDG to be not as good for a lot of software/library/syntax related searches, and now I usually append "!g" to those queries. But those are maybe ~20-30% of my total search volume, so it's worth it to me.
I think it is fair to say that making DDG your primary search engine _today_ involves some compromise of overall search quality, but that's the price of supporting an evolving product.