It is because the modern Church in the west fears people, and espouses its people-fearing ways, and impose them on others within the Church, that the Church in the west is weak, saltless and useless for God. Its imposes its man-fearing doctrines, such as "cultural sensitivity" which it mixes with the pure, unadulterated truth of the Word of God, on others within the Church, which itself is to pander to the carnal sensitivities of the lost. I will use the term that modern evangelicals find distasteful until the day I die.
Instead, the modern Church loves cultural sensitivity more than Biblical sensitivity. The world knows that this wrong and inappropriate for the Church to do for its knows the Church is to be opposed to everything it loves. It is because of this that the world laughs at the Church for its hypocrisy in seeking to pander to its flesh. If a Church was being Church, it would shock, and turn the world upside down like the early Church in Acts.
That is why there is no revival - watering down of God's Word, making blunt the Sword of the Christian.