Why do targaryens only ride dragons?

Why do targaryens only ride dragons? The Targaryens were just one family and not a high ranking one at that in the Valerian Freehold. There were hundreds of dragon riding families before the fall of the empire. Go read “Fire & Blood” or “The Rogue Prince” because the Velaryons intermarried with Targaryens and their offsprings often rode dragons too.

The Targaryens were just one family and not a high ranking one at that in the Valerian Freehold. There were hundreds of dragon riding families before the fall of the empire. Go read “Fire & Blood” or “The Rogue Prince” because the Velaryons intermarried with Targaryens and their offsprings often rode dragons too.