Added to that is the degradation in quality I’ve seen in Duck.com’s search results since last year. I’m not sure what changed under-the-hood, but I found myself having to search a second time in Google way more frequently to the point where I just gave up and made Google my default choice in January.
I’ve also found myself having to search using Google after a DuckDuckgo search fails to return quality results. It’s disappointing.
Update: I’ve subsequently learned about https://www.startpage.com/, which basically proxies Google without all the invasive bits.