A cult is a limited time, esoteric group. Your pre tribulation rapture philosophy which is of the 19th century just like the Adventist philosophy, fits the bill of a cult.
Reading you pre tribulation rapture folks Duke it out with another 19th century philosophy cult is very engrossing.
Who will man the water pumps and home gas distribution centers?
What will happen to the unmanned or confused directions monitoring the electric grid? How many surgeries will suddenly be without the surgeon or nurses and anesthesiologists, or patients undergoing surgery?
Who will clear the horrendous array of train and highway crashes? Who will go erect power lines downed by crashes of unmanned cars, trucks, SUVs, and semis?
Who will be in the streets of city chaos to prevent murders and riots and rampant panic with deliveries to the city markets?
For we who are suddenly no longer in this four dimensional realm, transformed int he twinkling of an eye existing in a greater set of space and time variables the experience will breathtaking in wonder.
For those not gathered to Him the scene will be a growing hell on earth, for a while, until the antichrist leaps into action with his all signs and lying wonders powers from satan.
If someone who does not believe there is coming a sudden gathering to Christ event, and they have been trusting in Grace plus their works, as if GOD Who created the entire Universe and holds it in delicate balance needs their works or would even have an accounting to check their earnings, the sudden Departure will beg for a strong delusion to believe the horrific chaos is a good thing. ... And they will get it!