Why do dragons like Targaryens?

Why do dragons like Targaryens? Dragons, who had longer lifespans than humans, were also passed down as inheritance, which is one of the reasons the Targaryens were famously and proudly incestuous. With dragons on their side, the Valyrians grew quite prosperous.

Dragons, who had longer lifespans than humans, were also passed down as inheritance, which is one of the reasons the Targaryens were famously and proudly incestuous. With dragons on their side, the Valyrians grew quite prosperous.