I hope i'd never have to use a tool as a weapon, it was way too late to move to camp in unfamiliar territory, if i had not had a knife with me i'd have fashioned some sort of club from nature and failing that a good hand sized rock, any of these would have given me the same good nights sleep i got from sleeping with the knife, i am usually quite capable of defending myself weaponless but it never hurts to give yourself an advantage if you think the fecal matter is going to hit the air circulation device, i've been knifed twice in my life (both whilst in a city centre), once arguing over £5 and both times i did not have a knife or any other weapon and i was twice the size of my assailants