『But just think about it. If you were bitten by a zombie. It means you couldn't stop it. That means, either you are unable to move, there are too many zombies to handle, zombie got you by surprise. In first case, even if you manage to kill the zombie and cut off the bitten limb before virus reaches other places, you will be unable to move with a very severe bleeding which you will most probably won't survive and die... In second case, even if you manage to kill the zombie that has bitten your limb, there are plenty of other zombies around that will probably won't give you opportunity to go cut off your limb and treat the wound so that you won't die from bleeding. Only a 3rd case you might survive if there is at least one friendly player beside you...』