Every human needs companionship. Why? Without companionship a human may become hostile due to lonliness. In the story the monster goes to the extent as trying to force friendship on to william. Classic example of becoming hostile due to no companionship.
     If one goes without a friend or life partner for to long that person may start to feel as though he or she is not good enough to be socially accepted. If a man does not get a wife then He may stay locked in his basement doing nothing with his life. Only because he may feel thats the only thing he will be good at. While that may be true it may just be because he was not lucky enough to find thAt special someone.
    The monster has had the worst luck. He is unattractive and he believes that is the reason he has no companion. Hard as it is to hear it is true that is just human nature to stray away from something unattractive whether its a good or bad situation.