I was joking, and I actually don't use bangs. I could have made the joke and not actually use Duck Duck Go.

Though I use it so... not giving any data to Google is the killer feature for me. I like the idea that the results only depend on the keywords and not me. Instant results are quite nice too.

I'd like not to indirectly depend on Microsoft though.

Edit: and I'm not bound to Duck Duck Go. I'd be glad to use something else too.