There's a call to adventure. It's something in the inner psyche of humanity, particularly males.
Random chance plays a huge part in everybody's life.
There is no winning or losing, but rather the value is in the experience of imagining yourself as a character in whatever genre you're involved in, whether it's a fantasy game, the Wild West, secret agents or whatever else. You get to sort of vicariously experience those things.
The secret we should never let the gamemasters know is that they don't need any rules.
Role-playing isn't storytelling. If the dungeon master is directing it, it's not a game.