Its offensive to some because they dont understand how someone could possibly have these thoughts. People dont just say hey! I think i will think these horrible thoughts. They come from somewhere. Where psychologists dont even know. Also alot of people arent aware you can have these thoughts but not act on them. When I was 11 I was already aware my thoughts were bad. I just didnt know it had a name. At that time my cousin who was 10 asked a girl who was about 7 to play a sexual game with us. I immediately freaked out because i had bad thoughts about her anyway. I dont remember what I did or said but I know I stopped it. It did not happen. One because I didnt want her to be a victim and two because I didnt want to be a perpetrator.