My experience of Auschwitz was a bit different - there were plenty of rather sobering sights, and I did feel sad for all the victims, but I never felt anything close to shock or a deep horror. I found seeing the various sites very interesting and put things into perspective, but I'm not sure that it made a huge impression on me. I found being outdoors at the Birkenau site was not that unpleasant, and all the Israelis marching round the place with giant flags made the whole thing seem less serious.