Whereas Steel has a lot of resistances but gets hit super effective by the most common attacking types.
Each is good at something and bad at something else. You can never do major damage to a Dark/Ghost...however you'll never do very little either. Whereas Steel can shrug off many hits, but EVERY team can hit it hard. (Because who doesn't have a Fighting, Ground, or Fire attack in their arsenal somewhere?)
You are the universe Expressing itself as a human, for a little while