Have you sky dived?

No and wouldn't. I never had the slightest fear of heights until I had a freaky experience that messed with my head. I'd spent a few days installing a stainless steel chimney for a woodstove. I put a plastic bag over each section when I paused. One night I was in bed and heard it start to rain. I forgot to cover the last section. I put on my jeans and boots and went outside in the rain and climbed the ladder with the bag in the dark and got to the roof peak. At this end of the house it was 3 1/2 stories to the ground. I carefully covered the chimney while my brain was saying get the hell off the roof. It was all I could do to shimmy on my ass to the ladder let alone turn to go down it.
Since that day I won't near any point of height that has no restraining rail. I once climbed cliffs with freaking sneakers and no ropes and sat with my feet dangling off the cliffs summit. Stupid but no fear.