It is not so much the great heights in and of itself, it is the prospect of the fall and more importantly the life-ending flatter than a pancake landing that terrifies most that keeps most people sensibly grounded.
Be happy that you do not. The show is the over glorification of all the worse things. What's these people are proud to be on television and known for being collective human wreckage. It's very upsetting to watch people act so crude and disgracefully.