Trustless systems expand who you can cooperate with. Systems which require trust limit you to cooperating with those you trust. Furthermore, systems which are

Trustless systems expand who you can cooperate with. Systems which require trust limit you to cooperating with those you trust. Furthermore, systems which are manipulable by a central group that you are supposed to trust are often used not because they are trusted, but because there are not good alternatives. The trust element is only a factor if there are options. Decentralized systems are about moving control to a protocol all participants agree to rather than a small group of people.