Nobby, Rik, Donald,
I don't think it is melodramatic at all to see Auschwitz/Birkenau; it will definitely be a powerful and very upsetting experience though. Another one of that kind is Yad Vashem, the Holocaust memorial museum in Jerusalem. Again, very powerful but traumatic.
Nobby, do you have a T? If so, maybe you should raise this idea before you go. I am worried that you may well be badly triggered in a place where there is no one to help you or make you feel safe.
Rik I like your defiant and positive attitude when you say:
I believe that the majority of humans are good in nature, and that they would not willingly harm others. Why should the minority be allowed to destroy our souls?
Basically that's a trust issue. I can accept what you say as a rational adult; the problem is that 11-year-old Larry isn't buying it - trust is simply too scary. Perhaps that's another survivor trait: dealing as an adult with the feelings and fears of a brutalized child.