Since long I just don't see any reason to try out another search, I just get the results I want in a single shot. Another thing I like with DDG is that it doesn't seem to return different results depending on the profile it has on you, like Google does, so the same search tend to be deterministic, and that's a value added for me, might not be what you want though.
> So even worse? At least try them before recommending!
Fair, instead of complaining about my ineptitude though you could enrich this conversation saying why you find them worse than Google. I still stand by it though: Google Search is the biggest evil by far so whatever is not that is worth a try in my opinion, can't hurt for sure.