why do you carry a knife?

[irish lager]

i carry one to use at work. i also sell knives at work, so it would be odd if i didnt. in truth i always carry at least 2 knives. one for utility work, and one for self defense. Since i am not 21 i cant carry a pistol. and in truth i am quite interested in knives so i love to play w/ them, and have bought 30 or so in the last year.
I tend to stick to one brand... Spyderco, because they use high quality materials and keep the cost to an affordable price, and have great customer service. At the moment i have a spyderco scorpius SE in my right front pocket, and a spyderco navigator in my watch pocket.
J