I absolutely love that photo - real men one and all. Not a safety harness in sight. I hope that's a water bottle the guy on the right has! Me, I get queasy on about the third step of the ladder.
An instructor in some class I took posed an interesting scenario. He laid out a 6 inch line on the ground and said, 'Ok, this is an I-beam connecting two towers 40 storeys up - who would walk across it?'
Lots of no ways. He said, 'Alright, now I'm at the other end holding up a hundred dollar bill. Who would walk across for the hundred bucks?' Lots of nos.
'Ok, how about for a million dollars?' Some pauses, but still mostly nos.
'Alrighty then, now I've got your KID!' Hmmm.
His point was, all that changed was perception. That said, no way in hell I could do that, but then I've never had kids.