Blood and Guts
One of the problems some people have with Fight Club is the bloody violence and the transgressive idea of self destruction. Do you think the grisly elements are unneccasary and decensitize us to violence or do they serve a purpose?
I think it definetly pertains to the Narrator 's attempt to reconnect with the masculine community in a meaningful way, which needed to be through dangerous and painful trials to test and expand his manhood (the lye burn, the car accident, the homework assignments). After all, men aren't born, they're raised and the darkness of the story expresses how grim a task it is to become a real man in today's society.