Its amazing the number of pilots who are afraid of heights. Until about a year ago I thought it was just me. In fact I had someone today talk to me about that. He assumed I wasn't because I was a pilot.
My friend was a glider aerobatic competitor yet he was very scared of heights. His doctor said something about "no physical contact with the ground" when flying which would fool his brain. Amazing aerobatic glider champion, yet I had to help him paint the upper portion of his house, he wouldn’t even attempt to get up on the ladder.
Then again, maybe he just wanted me to paint his house? lol