I have deep, deep respect for heights. Not sure if it is a phobia at this point, but I get very very nervous whenever I'm in high places on which I can see how high I am.
Yeah, that's the way I am with heights. Not really scared of them per se, I can ride roller coasters, go up on tall buildings, and fly, but when I'm looking off the balcony of a tall hotel for instance, this sort of painful feeling wells up deep inside me and I have to stand back away from the railing of the balcony. I guess that is still technically fear of heights, but it's not a crippling fear.