(To oversimplify) Gibbon blamed the fall of Rome on feminization caused by Christianity. To radically oversimplify, Christianity turned the legions into pussies. Whatever you think of this thesis, our new religion is way, way gayer than Christianity. Just check out this prayer:
I promise to be good to the earth and to all life on this planet. To all growing things, all kinds of animals, and all races of people. I promise to protect all life on this planet, To live in harmony with nature and to share everything fairly, So that all people can live with one another in good health and peace.
Foseti 