I have `s` to search sourcegraph.com, DDG has !sg. `t` to use Google Translate, DDG has !gt, `i` to search IMDB, DDG has !imd or !imdb, v to search animated images, DDG has !gif, `ni` to search nixpkgs issues which DDG doesn't have (although they do have one for the nix repo at !nr which is pretty impressive. I use `nc` for this). Not to mention personalized shortcuts like searching my company's GitHub organization or JIRA tickets that would never be a public bang, much less have a 2 character shortcut.

I stopped there but it is clear to me that I benefit from making my own short aliases for the searches that I use most. Plus it is nice to not send my logs to a third party and get improved performance.