What about gold reserves, or just bunkers of food and medicine?
Freegards
There is coming such an horrendous chaos for a period that people will not believe how bad it is going to be after JESUS snatches away the innocent, the CHURCH, and the dead in Christ (the innocent are in Christ because there is no law standing between them and the Grace of God).
I consider myself a prepper, not for after the Rapture but incase of natural disasters. When I'm gone those preparations will be around and marauding hungry people will no doubt find them. Prepping is common sense in action. It need not be attached to the expectation of being Rapture thus leaving behind provisions for those not snatched away.
I do have a good Bible in the prep storage, so those left behind will have 'something to read' ... I expect there will be a lot of 'new Bereans' ...
There are many clues to the Physics of the Rapture, not the least of which is Daniel Chapter five (a different where/when is all around us, we just are not yet fashioned such that we can sense it) and the Resurrection of Jesus, when He left the tomb without rolling away the stone, entered a locked and shuttered room, and disappeared from the table where the disciples from on the Road suddenly realized Who had given thanks and broken the bread for their meal. There are many scenes from The Old Testament that give clues to the true nature of our Universe and 'other' spacetime coordinate systems which we are not now equipped to sense.
Can’t eat gold; or wipe yer butt with it.