Well, to play Devil’s advocate (ironically), I’ve spoken with some conservative Rabbis on this point when I worked in a Kosher kitchen at a Jewish summer camp, and their argument was that God, of course, knows about and intentionally inserted these loopholes into scripture and intended them to be found and used. However, the follow-up question of why bother doing that instead of just not disallowing the behavior in the first place did not yield a satisfactory answer.