Reading "Stiff"

As part of my project, my mentor Mrs. Repasy is having me read "Stiff" by Mary Roach. In the book, the author explores several situations where human cadavers are used in experiments. I was surprised by a lot of the ways that researchers use bodies (such as detonating land mines near them to test protective footwear and using them to test the safety of new cars).I like the book a lot and find it very interesting, but sometimes the author's view on the experiments annoys me. She says she wouldn't be okay with her body being used in certain experiments. Why not? After a person dies, they don't have any connection to their old body, and probably aren't even aware of what's happening to it. I really don't care what happens to my body after I die, so long as it's benefiting science and not rotting in the ground. Bodies that are donated to science are not only practiced on by medical students, but are used to improve technology and save lives. Denying this opportunity to scientists and researchers seems to me to be very selfish.
Regardless, it's a pretty good book.