I'm with you. I think one of the reasons for the falling away is that when the Beast is revealed, and people who have been taught the pre-trib rapture from birth realize they are still here, they will abandon the faith in droves, throwing the (Gospel) baby out with the (pre-trib) bathwater.
If people actually know the pre-trib rapture didn't happen then it follows that they recognize they are in the tribulation.One of the things that clue them in is the fact that the anti-christ has been revealed,7 yr treaty etc etc.They will then know this is all true and happening before their very eyes.They can count the days till he walks into the temple,they can count the days right down to the day Jesus arrives.They literally will be able to tell people they know what is going to happen and it will happen exactly on those days.It makes no sense whatever to think that the effect this will have is to make people lose faith.The exact opposite is what one would expect.
That may be a bit strong, but it could thin out the herd a bit. As believers our trust and faith is in the shed Blood of Christ and every Word He spoke. So when folks ask me about the rapture I usually tell them I am an Upper Room Discourse type. All we need to know are in the first few verses of John 14.
I also respect the principle that doctrines should not rest on one or a few verses. So I am not “dogmatic” on a pre trib rapture. I am dogmatic on a rapture happening, just not on the timing.