It ' s an interesting sort of average that due to screenwriters being on their side ends up as an advantage in the end . I ' ve noticed myself that in Star Trek the nonhuman races always end up as fodder or look how strong I am I can flip a Klingon material . Even their romances are pushes to the side in favor of humanhuman or occasionally humanother based romances . The only nonhuman who actually get ' s onscreen consistentpermanent relationships is B ' Elanna Torres , and she ' s half human . Interesting note about Doctor Who and Lord of the Rings ! I haven ' t watched a whole bunch of Doctor Who but the fact that all his companions are human is a pretty good example . He ' s also super into humans in an almost ignoring other races sort of way . Then we have Lord of the Rings the time of the elves is over , the time of man has come thing too . They do a little better of a job with the Hobbits being the ones who actually saved the land and all , but the humans tend to get really big parts even when the other races should be the focus of the narrative . Literally every event I can think of save the saving of the Shire at the end of the last book involves some human needing to be there or around to help with the major event they ' re participating in .