I also disagree with the idea that I always have a sense of direction. When I travel the windy roads to Tahoe and get out of the car, I find that north is often in the opposite direction that I feel like it is. Even after checking a compass, I still don't feel the north. It's a humbling feeling. If I'm the navigator of the group, I will have to check a compass regularly.

People relying on their internal sense is probably why people sometimes get horribly lost.