Now, crushing your enemies is cool. And, hearing the Lamentation of their Women never gets old. But, what is best in life? Seeing your dreams come true is what's best in life. What does that mean to us gamers? Why everything really.
You control your dream as a dungeon master. And you should dream big. Fill a continent or a world or a galaxy. You control the environment and the players perceptions of it. You are the creator and the fates control who lives and who dies.
Dream that dream and find 5 or 6 people to share it with you. Do it now!