Arctic was a dragon who threw monotony and restriction away in pursuit for better love than a forced one.
While his relationship worked out great... most of the time- he forced himself into the Night Kingdom, got exiled from his home, lost any significance to his title of "prince", and had two children. One he was fine with. The other... turned into what seems to be everyone's favorite hellspawn.

Was it worth it? If you asked me, I'd point out how he died and ask you, "What do you think?"