It's different for a few others though (including me). People leech, and end up becoming the first zombie and killing you. When obviously you wouldn't have died if they weren't following you. It just gets annoying.. So Hobo and I pretty much thought up the common courtesies, and Res named it "The Bro Code." You don't have to follow it, people just end up respecting you more and relying on you more if you do.
Though this mostly applies when it's just you and one or two friends in a cade. Not when there's 20 people in one small room.