Man is the most insane species. He worships an invisible God and destroys a visible Nature. Unaware that this Nature that he has been destroying is this God he’s worshiping.
In his youth, Rhaegar Targaryen thought he might be Azor Ahai. At the time, Maester Aemon thought the same. If this is true, Robert Baratheon doomed all of Westeros when he killed Rhaegar.