"But I refuse to let it rule my life. I forced myself up The Empire State Building, and had sweaty palms, and vertigo big time...but I did it."
... and presumably that makes you feel empowered, or something. One BiL doesn't like heights, and wouldn't 'force himself' - would just acknowledge it wasn't something he would want to do.
I have no (known) fear of heights, plane travel and so on is fine, and I can swim (enough to save my life, and probably that of others if needed), but even if I won an all expenses paid trip to climb Everest (OK, Snowdon) or go pot-holing, or do some other "out of the ordinary" thing which some people love, I wouldn't be interested.
PS - Backinthebox would happily exchange places (not after a sex change, honest, but to fly a plane!) and well done you for your response - "just don't like it" (or in my case "want to") seems a perfectly valid reason to me, just as I have no interest in driving cars, or motor bikes...
Put me on a snowmobile, water-based craft, or in the air, and I'd certainly "give it a go" whatever the heck it was, though. Nearly had a chance to 'drive' a train (Canada to USA) but you only have speed control, so not the same!