If you're making $80k, and the pilot job would pay you $50k...I'd say, take $30k (pre-tax obviously) and see how far that will let you travel for a year.
Might find out you can go to the destinations that YOU want to, hit up the local clubs, bars, night life, and not worry about someone wanting to leave early the next day.
As other posters said, a job doesn't define happiness. You may find a sudden quick rush of euphoria, but the reasons you left will still be there in the end...No job is perfect, it's a means to an end.