"Because I was made into one," Lambert answers, matter of fact and only slightly bitter - he's still in too much of a good mood having been cured to be annoyed or unnecessarily cynical. "I didn't have much of a choice. Nobody who becomes a witcher chooses it -- we're taken when we're too young to know any better, and by the time we realize what a crap deal we've gotten, it's too late."

Mostly too late because you were dead or your friends were dead.