I remember reading about something that described this thought in a Star Wars fan site once. The stories that show human characters or human like characters everywhere, aren’t really human at all … they are more like place holders for exotic space alien beings that we can’t even imagine.

I’d like to think that of Star Trek as well. The stories are just stories being shown for our convenience because the aliens they would encounter would be so strange and foreign to us that we wouldn’t be able to believe it, let alone understand it