To me, DDG's results seem relevant-ish, while Google clearly knows my profile and what I'm looking for. I get more relevant results with Google than I do with DDG. That of course comes with the price of my search history and other behaviour online, but I'm okay with that.
Google also comes with some features that is convenient, when searching. Doing a "take away [town]" I get a minimap with pins, so I can see the take away places near me, the menu's are easily available as well as information about opening hours. DDG just gives me an (apparently) unordered list of restaurants in the town I put in, and with my sample search, the two first results doesn't actually provide take away.
Google to me is a convenient choice. I like convenience.