considering the actually scientifically attestable facts that gay love keeps you eternally young and that forced or unhappy hetero marriage makes you age worse than milk i present to you
evidence a:
and evidence b:
i will let the evidence speak for itself.
(actually i’m not: this clearly shows that kakashi is prospering in a happy, healthy relationship with gai and that grandpa naruto here is getting the life sucked out of him by a loveless het marriage to a woman he doesnt even know that well)