I just watched the Extras from Star Trek V and William Shatner is terrified of heights. I should have remembered that. He hates flying for one thing. I knew that so I don’t know why I said he loved rock-climbing. He never did it. I do know that he was very athletic and adventurous. I guess I assumed that’s why it was in the film.
Instead, Shatner put it in there for poetic reasons, to show man’s desire to reach greater heights.
My credibility is craaaap now. I’m apologize for mis-leading. Please forgive.