“Purgatory is a fantasy fabricated from 1438...”
Nope. As I just posted to you there is no reason to pray for the dead if there is no Purgatory.
Also, off the top of my head, why are you making up this date of 1438 when I have read documents from the 11th and 12th century about Purgatory? Even the skeptic Jacques Le Goff insisted that Purgatory was discussed widely in the 12th century.
And, of course, you’ve never even seen this book, right?
https://books.google.com/books?id=Fw1cAAAAQAAJ&pg=PAPP5#v=onepage&q&f=false
And, still, prayers from the dead show that people believed in Purgatory long, long, long before the Middle Ages.
Exactly, which is why there's no point in praying for the dead.
Hebrews 9:27 And just as it is appointed for man to die once, and after that comes judgment,
Time wasted praying for the dead would be better spent praying for the living, that they get saved BEFORE they die. Then nobody has to worry about them after they die.