-Mankind's love of telling stories goes back to early myths, and as formalized as Homer's Iliad.
-The game teaches teamwork, as most challenges cannot be overcome by a single player. In fact, challenges are balanced with the assumption of multiple players cooperating against them.
-Referees (Dungeon Masters) of the game, in preparing for campaigns, often delve into a wide variety of information such as geology, geography, history, literature, archaeology, riddle and puzzle solving skills, and even some arts and crafts, in the preparing of adventures, researching flavor material, and in painting miniatures or creating set-pieces for play use.
-there is a minor but noticeable improvement to basic math calculations and memorization techniques.
-roleplaying games of all sorts allow us to explore decisions and situations that would be unfeasible or impractical in real life. Examples of tackling political situations, tackling violent problems, throwing caution to the wind, or even being noble and heroic no matter what the cost.
I hope some of these give you some inspiration.