Does it really matter? At least falling from that height you get the privilege of dying vs being paralyzed. Another thing that I haven’t seen mentioned here is you need to use a towel or some other protective cover for the rope at the peak. A shingle peak will wear a rope pretty quick.
That's one of the benefits of a discussion; people raise points like that which some of us were unaware of. As for your first point; I still won't go up there.
I've come off a second floor roof onto a shed, then slid down that roof and landed on the ground in a bad position. I got up and drove myself 50 miles to the hospital where they didn't believe me because "I hadn't bitten my tongue"... I think that I used up 8 of my 9 lives that day.