The finale of Game of Thrones sparked many debates, but one of the most unexpected moments was Drogon's reaction to Daenerys' death. It seemed that the dragon should have burned Jon Snow for killing his mother, but instead, he turned and destroyed the Iron Throne. Let's break down why this happened.
Jon is a Targaryen, and dragons don’t kill their own?
Jon Snow is a descendant of the Targaryen family, though he only learned of this late in the series. Dragons may instinctively sense their connection to this ancient family, so Drogon simply couldn't bring himself to kill Jon. Remember that Jon was able to ride Rhaegal without issue — something only those chosen by the dragons could do.

Drogon understood the real culprit wasn’t Jon, but power itself
Daenerys died, but who was truly to blame? It’s possible Drogon realized that the real cause of her downfall was the Iron Throne, a symbol of limitless power that corrupts souls. Instead of seeking revenge, Drogon destroyed the throne, as if trying to break the cycle of destruction that had begun centuries ago.
Drogon isn’t just a beast, he’s a character
Throughout the series, dragons were portrayed not as mere monsters, but as intelligent beings. Drogon, especially, was very close to Daenerys — he felt her emotions and pain, so he likely understood why she died. Perhaps in that moment, he didn’t see the point of revenge, but only wanted to take his mother and disappear.
What happened to Drogon in Game of Thrones?
After Daenerys’ death, Drogon took her body and flew off in an unknown direction. Bran speculated that he was heading to Valyria, the dragons' homeland. What happened to Drogon next remains a mystery, but he became a symbol of untamable power that humans would never fully control.

Conclusion: Drogon chose freedom, not revenge
Drogon didn’t kill Jon not because of a “plot hole,” but because it made sense. He wasn’t a mindless killing machine, but a creature capable of feeling, understanding, and making choices. And his choice was to destroy the symbol of power and disappear, taking the last Targaryen queen with him.