Kind of the same for me, although to a lesser extreme. I used to be a CATV line tech and was up and down utility poles all day long for years. Then, one day, my gaffs cut out on one of those hard gas-treated poles (the grey ones, as opposed to the creosote-treated brown ones) and I fell about thirty feet. I was pretty lucky--the ground at the base of the pole was very soft because of recent rain and I wasn't hurt other than having to go to the emergency room to have a three-inch splinter removed from my right forearm. The doctor had to cut off the jacket and shirt I was wearing because the splinter had pinned them to my arm. I still continued to climb poles afterwards--in fact, I climbed that pole again immediately to finish the job before I went to the ER--but I was never as comfortable afterwards. Now, after having been away from it for twenty years, I find just thinking about it makes me a little nervous.
I'm not bothered by high places in general as long as I feel secure but I couldn't do any serious tower climbing any more. Once I get above twenty feet or so, I start feeling uncomfortable.