I'm against outright teamkilling in just about any case, but with Left 4 Dead I'll make an exception. In a way, L4D is a zombie survival simulator. You have to survive the apocalypse alive, it's as simple as that. Where this game becomes very "meta" is where it gets interesting.
Here's a scenario: in your team of four there is one guy that has brought your collective group to the brink of destruction on multiple occasions. He/she keeps making easily avoidable mistakes that bring down the horde and almost cost lives (or possibly does). This person is a liability and a danger to your continued safety and survival. He/she is slowing the group down and at the same time is using up a portion of the group's very limited amount of supplies (in this case first aid, pills and grenades). After thinking about it this way, what would you do?
It's here in the player dynamic that L4D mirror's real life. Humans have a very strong survival instinct and in most cases will do whatever they have to so they can continue to survive. In your case, Teefus, those two people you gunned down were slowing down both you and "Good Guy #2" and were in turn exposing you to unnecessary danger as well as keeping you from being able to get to safety. I'm sure you felt bad about it (hence this thread) but I'm willing to bet that both you and "#2" were able to survive without any major problems after that.
In damn near every case team-killing hurts the team. It wastes respawn tickets, it hurts a defense effort, it prevents captures, whatever. In Left 4 Dead, though, it could either hurt the team or help it. Sometimes you may be in a position where you have so sacrifice one person for the greater good of the entire group.
~Van
Here's a scenario: in your team of four there is one guy that has brought your collective group to the brink of destruction on multiple occasions. He/she keeps making easily avoidable mistakes that bring down the horde and almost cost lives (or possibly does). This person is a liability and a danger to your continued safety and survival. He/she is slowing the group down and at the same time is using up a portion of the group's very limited amount of supplies (in this case first aid, pills and grenades). After thinking about it this way, what would you do?
It's here in the player dynamic that L4D mirror's real life. Humans have a very strong survival instinct and in most cases will do whatever they have to so they can continue to survive. In your case, Teefus, those two people you gunned down were slowing down both you and "Good Guy #2" and were in turn exposing you to unnecessary danger as well as keeping you from being able to get to safety. I'm sure you felt bad about it (hence this thread) but I'm willing to bet that both you and "#2" were able to survive without any major problems after that.
In damn near every case team-killing hurts the team. It wastes respawn tickets, it hurts a defense effort, it prevents captures, whatever. In Left 4 Dead, though, it could either hurt the team or help it. Sometimes you may be in a position where you have so sacrifice one person for the greater good of the entire group.
~Van