I must say I'm having the reverse experience. I very seldom use its Danish regional setting, but even for Danish searches DDG is fine. It's only 4-5 times a month I need the !g bang. But knowing about Startpage, I now use the !sp bang instead of !g.

Indeed, due to the bangs, I know use DDG as my proxy to a lot of other search engines, like Wikipedia (!w/!wda/!w..) and Wiktionary (!wikt), and even obscure ones like Memory Alpha (!memoryalpha). Very handy indeed.