I tried it long ago and it felt stripped down at that time and I didn't think I was getting full results. Because of security concerns with Google search, i decided to give DuckDuckGo a fair try a last year. After getting used to the less flashy look and fewer fancy paid search results at the top of the page - it has been my default now on my phone along with home and work PC's. After getting used to the look and feel, I get everything I need.
I had to get used to that change in "feel" - which is what most people notice the most. Google has put a HUGE amount of time and money into just the look/feel of their pages (you could write a thesis on that alone) and DDG doesn't have that same feel, but I can say that the actual results I get between the 2 engines are nearly identical with the exception of the paid results. Now that I am used to the feel of he page - i'm glad I decided to use it and give it a fair shake.