Being as knowledgeable as you are you know that there are other methods of dating matter:
http://en.wikipedia.org/wiki/Radiometric_dating
Yes, dragons are fantastic and awesome creatures; when I sit down and play Dungeons and Dragons I'm able to suspend my disbelief and am able to imagine all kinds of things. It really helps make the game more real and satisfying. Griffons, hippogriffs, death knights and yes dragons and more come alive in my mind.
But when the gaming session is over I put my disbelief back in place and put my books and dice away.
Perhaps you should do the same.