Even after using DDG for the last 5-6 years, I find myself always using !g with it. So much that, it has become a muscle memory thing and sometimes I type it involuntarily.
Sure, if I just care about US specific results and I am doing an exact term search or maybe StackOverflow result is my target, DDG comes close but Google gets context of things much better. I keep finding much better search results that had more context with my search. I don't know how to quantify/measure this but to me Google Search is still much better.