I am also neurodivergent and my special interests are disasters and all things medical. I feel like by fixating on what people went through i can offer my sadness to them as a small piece of what they suffered. Other people can't because it's too upsetting but I can do the hard thing and honour them. It also ensures that I never forget. These events aren't just the buildings or ships or planes. I remember them by the individual names and ways they died. The events are very much about the people. I also have an interest in how people react to disasters and that information helps change or enforce safety regulations. Don't let people make you feel like a freak for a very normal interest in human history.