| The good form is protective, the bad form just normalizes something that is common at the time. Is there any particular reason a woman cannot lead a prayer? Is there any particular reason why we exchange work for money? Is there any particular reason why not to eat pigs? For each of those, the answer may be yes or no depending on your time and place. The reason yes or the reason no may also be different. |
The statement doesn't mean to keep the status quo, its meant to encourage tracking down the "why" before tossing things away. If a society says to not eat pigs you can't just decide to one day toss out the law. For all you know the pigs of that region are infected and will make you sick. Throwing away that status quo before tracking down why might end up making things worse.