A word study of "caught up together" may shed some light on "Rapture"...
A study of the development of religion from an anthropological point of view would be more beneficial. We had to learn about the world from the moment we, as a race, began to perceive more than the need for food, shelter etc. We made sense of the world as best we could two thousand years ago. To cling on to the answers we came up with two thousand years ago in light of the things we have since found out is - well I am not going to be rude - it's your choice.