Yes I agree, I't should not be advised, but then some people live where there are very few if not no snake breeders. For example, when I wanted my first snake, I spent ages looking for a breeder, or anyone who could sell me one, but in vain. Then one day I cought a young herald hatchling, which I kept, she was just as good as a captive bred she always ate, never bit.
Im just saying, If not done on a large scale, catching and keeping young snakes may not be such a bad thing.