I also prefer DDG's user interface over Google's. And DDG's !bang search shortcuts.
DDG has been my default search engine for years and its results are good enough for me 95% of the time. I only need to use Google as a fallback when searching for niche technical information or "needles in haystacks".
Even then, the Google results are usually terrible. I haven't used Google as a fallback in about a year because every time I tried it they couldn't find what I was looking for either. Or they did something atrocious like changing my search terms for me.
What I do care about is trust-building and monopolistic practices.
That, to me, is a great reason to use DDG instead of Google or even Bing.