It's funny, I've gone through a number of search engines. Webcrawler, altavista, lycos, yahoo, google and now duck duck go. DDG is the only one that hasn't been an abrupt switch. I would search DDG, then !g if I didn't find a tolerable result. But that's increasingly changed in the last few years, to the point that I have stopped using !g altogether.
More often I want !w, !gh, !mdn, !msdn, !v, !osm or similar.
It's that which makes DDG great: instead of being one search engine to fit all, it's a portal to services with specialized information. If you're using DDG's basic search to find specific information then you're using it wrong.