Probably not much help ...
I don't like heights. I get seriously unhappy walking along a perfectly good path which is a whole foot away from a namby-pamby fifty foot drop, even when there's a fixed chain to hang on to. So unhappy that I'll walk the other way round an entire mountain in preference.
But somehow having only a couple of millimetres of aluminium separating me from a two mile drop to the ground doesn't bother me in the slightest ... no, I can't explain it either.