I wouldn’t necessarily be against it, either, but I would feel I had some interest in how sperm were used in a different way from other organs. I’d also feel differently about something physically identifying like a face, and even more so about the brain/cognition (if there were a way to do a partial brain transplant which carried memories or something but didn’t transfer consciousness — seems unlikely given what we know of the brain today, but I wouldn’t count it out since we don’t really know all that much.)