Google has personalized search enabled by default for users, which makes it feel more "relevant", of course you get this by sacrifacing any means of privacy. For me, I don't mint unpersonalized results, however, my reason for stopping using ddg is a bit unorthodox one; the overall search performance (as in the time you need to wait until the results load) was significantly higher than Google's. I still believe that Kagi is a game changer.