Was Brad being selfish?
I've thought this over and over, and my opinions are still split. I understand survival instinct, and I can empathize with his decision to make her stay outside. But I cannot imagine watching my loved one cry and beg for me to let them in, and refuse them. I don't know how I'd live with myself knowing that I chose my own life over their's. But Brad was being logical, and I only wish I had the courage to make that same decision.
BUT, I finally decided that he was being selfish, because it was never about losing one life instead of two. It was only about saving his. He expected his wife to just sit outside his window patiently dying, because if she hadn't, she would infect him. But when it came down to him being the one infected, he had no problem putting the entire neighbor at risk. Brad's instinct was to save himself, just like any other human being, but he never considered who he might hurt along the way.
Any other thoughts?