The people raptured are only gone to the clouds and that is for a short time. They return soon with Jesus, and there are many unsaved peoples who survive the wrath of God who are ruled over by a rod of iron so the Earth is going to be extremely populated maybe more than it is now.
Rev 19:15 And out of his mouth goeth a sharp sword, that with it he should
smite (
Aorist tense verb with PRESENT tense meaning) the nations: and he
shall rule (
FUTURE tense verb) them with a rod of iron: and he
treadeth (
PRESENT tense verb) the winepress of the fierceness and wrath of Almighty God.
https://www.blueletterbible .org/kjv/rev/19/15/t_conc_1186015
https://biblehub .com/interlinear/revelation/19-15.htm
(remove the spaces before .com and .org in the two links)
Here
rule/poimaino is in the
FUTURE tense meaning it will happen at some point AFTER the second coming and battle of Armageddon while
treadeth/pateo is written in the
PRESENT tense meaning it is happening during this second coming. The treading and smiting are happening at Armageddon but not the ruling which proves ismortals will be alive after Armageddon is over. This proves the Premill position because indeed
there is a future rule of people who were not slain during the second coming that Christ and his saints will rule over.