Why can't I send my companions back to where I originally found them? Why do I have to send them to one of my settlements?
Example: Piper has a sister in Diamond City that she just completely forgets about. "Oh sorry sis, you can run the paper now, I'm gonna go with Blue and have wasteland adventures, and then when he finds a new companion I'm just going to stay at the castle forever, derp derp herp derp."