And even those kinds of trades will not be fun. I give my bullets to some dude. He gives me some potatoes and cigarettes. He asks me if I have more bullets to trade for another day. I tell him no, those were actually my last bullets. He points his gun at me and tells me to hand him back the potatoes and cigarettes that he just gave me. I have no bullets left, even for my own protection. I hand him my potatoes and cigarettes. Now I have nothing :(