I've got this...theory, you could call it. People are like wallpaper. If we really like one (wallpaper or a person) we'll hang on to it. If we don't like one we'll try and get rid of it but sometimes we just put up with it. [I know, this is one really ridiculous 'theory'] Then after a while we may get bored of the 'liked' wallpaper and tear it down (just like we do with people). Therefore people are like wallpaper...or get treated like wallpaper anyway...... hm....