1. 2 Timothy 4:3-4 For the time will come when they will not endure sound doctrine; but after their own lusts shall they heap to themselves teachers, having itching ears (or big ears like Obama); and they shall turn away their ears from the truth, and shall be turned unto fables [Government and false doctrine].
2. Fire and Brimstone preaching has been lost because pastors and evangelist are ashamed of the gospel and shun from warning people about the fire and brimstone of HELL.
3. Humanism is on the rise and has successfully permeated Government leadership in the world. These humanism Government leaders have used humanism to supplant God as the source of man's subsidence on earth. Liberal are big proponents of humanism, i.e., believe in the Government, it will save us, believe in Christ rejecting leaders, they will save us, etc.
4. Satan's success program against Christians. Satan does not need to work with unbelievers to convince them, they are already in his grips and lost for ever [Islam]. Satan's entire effort is on a continual attack on Christians. Satan promotes false teachings and false doctrines to deceive many, particularity the weak Christians who have little or no doctrine inside their soul to resist Satanic false doctrines. Satan also attacks the "professing" Christians, deceiving them into thinking that they are true Christians, and then when hard times comes, they fall away, unable to handle it [Tares]. Satan heavily promotes false doctrines which are not Biblical for the Biblical grace of God today, like "salvation by works" [cults like Mormons, Catholics, Jehovah Witness], "tithing" [God's program for Israel], "false doctrine which do not follow the Apostle Paul" [too many religions to mention], "so called Bible scholars who destroy the teaching ministry of the Apostle Paul", "women preachers, who preach a feministic message, not a fire and brimstone message", "self-proclaimed bishops esteemed standing" today's gifts are not elevated bishops, but pastor-teacher and evangelist.
2. Fire and Brimstone
I agree with your point #2. The threat of everlasting torture after death by a loving God has been very effective historically.
I can see where Islam will replace Christianity over time as they not only threaten the population with everlasting torture after death if you don't believe, but with torture and death here on earth if you leave the religion.
Religion without coercion is relatively ineffective.