here is my take on it. just as every appliance comes with an instruction manual, where the manufacturer tells us the best way to care for our new appliance - the Torah is our “instruction manual”, direct from our Creator, who knows what is best for us. when G-d tells us to keep kosher (and to keep Shabbat and other mitzvot), it is a gift of love, and He is telling us what is best for us to do, both physically and spiritually.
