... because it removes part of the look-and-feel of the page that we keep consistent across All The Tropes, and provides no apparent gain.
Subpages should always have links back to their parent pages, for the use of people who don't use the wiki's default front-end skin.
@TropeyTheWonderDog @Labster @Looney Toons @GethN7 @Robkelk @QuestionableSanity @Derivative @SelfCloak