Well, sometimes what you're used to matter too. For me DDG is better (expect for local searches, in which case I've got to include my city's name).

Every time I search anything in someone else's computer (with google) I find it much harder to find what I'm looking for, sometimes I can't find and just go to DDG.

The only times I use !g is when I find some pretty obscure programming errors and no (useful) results on DDG, and only once in a while google is able to find anything better, usually the results are the same.