Do I have an obsession with the Holocaust?

I'm 13 and love history. I know it's a good thing to learn about historical events but how do you know if you take it too far? One of my historical phases is the holocaust. I have been reading and studying it for the past 5 months or so along with WW2 (since they are directly correlated) on my own free will. My Dad is a pretty open minded person and didn't have a problem with his but then I asked if I could visit a concentration camp and visually see what it looked like through my own eyes and he said I took it too far which quite frankly I didn't understand. I can't stop writing about it either in fact recently I wrote a poem about cremating children. it doesn't bring me pleasure at all constantly immersing myself in this but I keep finding myself coming back to it. Though you know how people always say they can't imagine themselves in a concentration camp? Well last night I had a very vivid dream imagining myself as a prisoner and watching what was going on but not being able to do anything. For the past day I can't shake that dream from my mind and those images have been haunting me. To make matters worst I know there have been other genocides and there are and there will be more but you know what they say "History repeats itself" and I can't help but be mad and ashamed of mankind. Is there something wrong with me that I can't stop thinking about it? My parents think there is.