There are several conversations taking place on this topic. One of particular interest is on the
yosemitenews.info forum (Steve C and I both post over there, too)
I am always fascinated by this particular topic -- Half Dome Cables -- because they (the cables) are the closest thing to the
Via Ferrata in the USA that I have experienced. As with Half Dome, people die using the European cables, too (recently, an internationally known climber was lost because he did not "clip in")but due to the fact that "rescue"(huh? What's THAT?) "risk"(everything is more fun after a Pint) & "dying"(we all gotta go some time) is viewed much differently, a conversation such as this would never occur.