Ufff I know I wouldn't do it not because I don't want to but because I suffer from vertigo.
Just climbing stairs, elevators make me nervous, but it's really a very careful job, more than they do if the right equipment.
That should not be, the company must repair such equipment, because it can be done, but a life of a human being from falling and dying is not recovered.
But I admire them, they look like spiders.