I do not believe that “all” children will be raptured as some teach. First an analogy of the last days judgment could be the story of Sodom and Gomorrah. There no children were spared.
Second…and a better analogy…would be the story of Noah. There, all breathing life was destroyed, except that which was on the ark (i.e. Noah and his wife and children), and all the remaining children on earth were destroyed with no exception.
Third…the first part of the tribulation is described like “the days of Noah”….”eating and drinking and marrying” (business as usual…odd if a billion children had disappeared) and thus a parallel is made between the two events.
Fourth during the last half of the 7 year tribulation the earth dwellers are described as having trouble getting enough food….a problem that would certainly be exacerbated by the presence of unbelievers children desperately needing to be fed.
Fifth logic dictates and scripture suggests that a “believers” children will be raptured/saved (e.g. Noah’s children) but an “unbelievers” children will not be raptured/saved (e.g. all children of unbelievers in Noah’s day).
You’re right in saying that Sodom and Gomorrah and Noah’s Flood are models of the end times judgment, but they’re not models of the Rapture. There’s never been a large scale event like the Rapture.
And you’re wrong in saying that all children were destroyed in those two events. If Paul was correct in saying that before reaching the age of accountability all children have eternal life (Romans 7:9), then the children of those two judgments went directly to Paradise where they waited in comfort for the Lord’s arrival.
The points you make are applicable to children born during the last 7 years, but not to the Rapture. I’ll stick with my opinion that all children, including the pre-born, will be raptured with the Church.