Wow. Years ago I had an expensive though older "CroMoly" mountain bike and it was so much more elastic than aluminum and, IMO, handled better because of it. I loved that bike and missed the ride, so I can only imagine what these things are like. Later, also due to biking, I was in a leg cast for 4 months. My doctor told me to get wooden crutches since they absorbed more shock than steel ones. It was a huge difference. They are hard to find, so I still have them in the attic - just in case!