Because the "Evil Villain's Out to Conquer the World and We've Got to Stop Him" setting has been done to death. It's OLD!Folks want something new.
Something like the "Well, The Evil Villain's Been Roundly Trounced, But The World's Still in a Horrid Mess, So I Guess We Get to Put the Place Back Together" setting. The big bad's been thoroughly whomped, you now get to go and put things aright again. And it won't be easy.
Mistwell said:The "putting the place back together after war" setting is boring. The "stop the evil villian out to conquer the world" setting is exciting.
Norris said:
But then again. the boring part between 1919 and 1939 turns into the exciting 1940-1945. So its cyclic.