Like the title implies, which character's death impacted you the most, and why?
I have to say Nick Fury, because I am a ride-or-die Sam Jackson fan, and they killed the homie in a post credit scene, after no involvement in the rest of the film, and in a non-bad ass way. They didn't even let the man swear. A person in my theater must have concurred, because he immediately got up, said "Fuck this." and left the theater before the post credit scene had ended.