So, you're uniquely qualified to void Humanae Vitae because you have or at least had in the past sex. Oh, and you were married.

And the Holy Father was unqualified because all he had was the shoes of the fisherman, a role as successor to Peter, leadership of the Catholic Church, which was given a divine command to teach all nations, and the keys to the kingdom.

Comparing credentials a reasonable conclusion can be reached as to which of you taught with authority and which made no sense.