I find the idea of body farms (research facilities where human decomposition can be studied in a variety of settings) absolutely fascinating. The first body farm was the one established in 1971, and was the University of Tennessee Anthropological Research Facility. One can still donate one's body to science for the purposes of understanding human decomposition.
For exactly one semester I was a physical anthropology minor at Stony Brook University, but I felt that I could either put forth the mental effort to do well in that field of study, or focus on the teaching aspect of my major - I didn't think I could handle both at the same time. I wish I had tried a bit harder to do both, although it would have required extra effort. I didn't do as well in the introductory class as I thought I would. Perhaps taking another class or two would have allowed me to better gauge whether I had the mental acuity for it.
What I find so interesting about forensic anthropology is that in studying the remains, one can develop a deeper understanding of individual and historical development. In essence, it provides answers to the question, "What happened?" and provides a deeper understanding of human development.