Although this question is not directed to me. I think I can try an answer, since it appeared on my right sidebar...
The one who can "fly away" is able to go where the common ones can't. It is very ordinary to run away, it does not imply some kind of superior freedom for the actor. So, he wants to fly away because:
1-he's not (or don't want to be) like regular people
2-he has (or wants to have) more freedom than "normal" people
3-he can do uncommon things with this liberty
I hope I've helped...