It's not really about just saving characters, it's about the fact that vector, set and to some extent map can be used in Clojure code as if they are an equal ci

It's not really about just saving characters, it's about the fact that vector, set and to some extent map can be used in Clojure code as if they are an equal citizen in the syntax to list. It saves valuable mental cycles that can be used on your actual problem instead.