Games require skill.
Running requires endurance, character, pride, physical strength, and mental toughness.
Running is a test, not a game.
A test of faith, belief, will, and trust in one's self.
So hardcore that it needs a category all to itself to define the pain. When game players criticize, it's because they aren't willing to understand, not because they're stronger.
Running is more than a sport; it's a lifestyle.
If you have to ask us why we run, you'll never understand, so just accept.