You don't know what someone's going to walk away from a movie with but you hope it's something positive but if nothing you want them most basically to be entertained and engaged. That's your job. But you also hope to give them something to chew on or maybe some insight into the human existence you hope a little bit. Not to sound too lofty.
Cancer has been unfortunately in my life. My mom's best friend is kicking ass in her battle with breast cancer. Both of my grandmas had cancer. I recently lost a friend to cancer.