These are all fine examples, Hose, but they are not applicable. If your children turn out to be just unlike you and rejecti you, and accept someone else as their father, they are still your children but they are not yours, because they don't want you.
People have gone from believing to unbelieving, from faith to atheism. So, yes, one can be "unborn again."
And, a major difference between us and your analogy, is that we do not specifically create some children in order to disown them and intentionally send them to their deaths, as the Deformed theology teaches or implies.
One does not get born again by splashing babies with water .. or eating a wafer.. or acting like you believe some concept even.. Being born again is a miracle performed by the Holy Spirit after through preparation.. OF HIS.. of you for many years.. Some organization may pronounce words over you but that means nothing if the miracle did not happen..
All churchs have those.. even in the clergy.. In some cases especially in the clergy.. So who is born again?.. I'm not sure.., Maybe even some Roman Catholics and Eastern Orthodox are.. even some JW's, and Mormons.. One thing is sure.. Being born again is not because of the building you meet in.. or of the rites and ceremonys you observe.. You know, like a Jew..