I started using Duck Duck Go's browser when I bought my Android tablet. As a browser, it seems to work pretty well. There may be some features or customizability options that some people would miss, but I kind of like the simplicity.
Ads come up, but Duck Duck Go allegedly blocks the tracking. That part must at least be partially working, because the New York Times won't allow me to use browser to read articles on their site - they insist that I turn off the privacy mode. If I'm going to read the New York Times on my tablet, I need to use another browser like Chrome. Since that's the only think I use Chrome for, there isn't much to track.
It says something about the qualities of our current president that the best argument anyone has made in his defense is that he didn’t know what he was talking about. -- Paul Krugman