Absence of Robin
Robin has become a very popular character in the comic book medium, but for some reason, directors and script writers stay away from him. We have a older man literally named Robin in the final Batman movie but he never became the young sidekick we know and love. Why do directors stay away from him? Would the DC cinematic Universe be well advised to add him as Batman's sidekick? Is he best left in the comics? Why or why not?