Rapture is a theology that man his taken from the bible and decided that they were going to be taken away before the tribulation hits the world. It is a belief but there are only a small amount of christians who believe in it.No, the rapture is from the Bible, and the Apostle Paul. Of course it is not a "thing". That is why Satan has deceived a lot, because they make it a "thing". People want to talk about beliefs a lot. That is so they can be catagorized and viewed any way the winds blow. I am not surprised. It has been going on since the 1st century.
Knowing the truth comes from the Bible. It is not in doctrine, theology, nor human interpretation. The reason Jesus preached we needed to be prepared, is because the majority of the church is not prepared. They cannot even agree on what the Bible says about the last few years on earth, before the Second Coming.
Take a look around the world. There are thousands of christians dying for their belief in Jesus who are being martyred. They are christians, some new, some more mature believers. What makes Americans different than these believers around the world? Did Jesus get taken up before he was martyred? what about the apostles? Think!