That is all mere opinion. Better to quote Scripture, because it negates Premil. In Luke 20:34-36, Jesus basically compares the temporal imperfect state of this present age/world to the glory of the age/world to come. Jesus says: “The children of this world (or aion or age) marry, and are given in marriage: But they which shall be accounted worthy (or kataxioō) to obtain that world (or aion or age), and the resurrection from the dead, neither marry, nor are given in marriage: Neither can they die any more: for they are equal unto the angels; and are the children of God, being the children of the resurrection.”
This couldn’t be any clearer. Whilst the “children of this age marry, and are given in marriage” (according to Christ in Luke 20:34-36), Jesus presents the future age as a glorified place that is earned by those alone who are “accounted worthy to obtain that age.” These people are shown to be the glorified saints alone. This could never refer to the unsaved, mortals of any kind, or the nations that come against Jerusalem as some suggest. These would all obviously eventually die. Such people are expressly barred from the age to come. This is speaking about immortal glorified believers only.
Premil has countless heathens populating the new earth in their corrupt mortal bodies. They have all the vice of our day prospering in their millennial age. They have all the sin and debauchery and rebellion of our day continuing in that day. Contrary to what Jesus says, Premil has millennial mortals continuing to “marry, and are given in marriage” – just like “the children of this age.” They render millions of unregenerate unsaved worthy to inherit the new earth. They are “accounted worthy to obtain that age.” However, the words of Christ negate such a belief.
To argue that the age to come is not the Cross is ignoring the age Israel was in when Jesus gave His answer.
If you argue your own logic, you would be saying the age after the age to come. The age to come was the age that started at the Cross, not the one that starts at the Second Coming.
If the Cross was not the age to come, which age after which resurrection? Jesus was explaining Paradise was when they would be like the angels, and no procreation. That does not literally mean they had no physical bodies. That means they were no longer genetically disposed, since God separating Adam into Eve, literally changed procreation. You may or may not agree, but God could have provided two people at the start of the Garden, instead of one and then creating a woman from Adam, or instead of introducing a female not taken from Adam.
Not sure how one can resolve the contradiction between day 6 and when God later put Adam to sleep. I guess it is another one of those "post" and "pre" arguments. There were males and females on day six. Eve came months later, or years later, or even 1000 years later. We just do not know how much time actually passed between Day 6, and the post Garden creation of Eve, much later in history, when Eve was taken from Adam.
So the age to come, ie the Cross, and Paradise put humans physically back to the point Adam was in before he "met Eve". At least after physical death, and bodily resurrection. All we know is that it will be different from present biology, even though they were expecting Paradise or the resurrection to be the same ole same ole. Paul declares a permanent incorruptible physical body not made by human "hands" (current biological genetics).
Certainly the coming 1000 years after the Resurrection in Revelation 20:4 will not be the same nor the same as Jesus explained Paradise after the Cross. Yes, all those from the OT (the age they all were in when the question was asked and answered) have experienced that next age in Paradise. The rest of the dead were not resurrected, and are still waiting 1991 years later. So your age to come is not a future event, not even post Second Coming. Your example is not even about Revelation 20. You are forcing your theology into Revelation 20, and not even a compatible explanation. They have not had babies in Paradise. They will have babies in the coming Millennium. The last time I checked, they have an estimate on the population, but no estimate on the sand of the sea shore. For all we know, there could be trillions of babies in the age to come, because your age to come started 1991 years ago. The next age to come does have procreation and they are not like the angels. Because Jesus' answer and that age to come was already fulfilled. Another reason Revelation 20 is not about the Here and Now. Even though your "age to come" is the here and now, only in Paradise.