Men Shouldn't Cook
It's obvious that gender stereotypes are rampant throughout Amish communities. Men should never cook for the family. Cooking is considered "womanly" work, so it's left up to the women of the household. This doesn't mean that men aren't cooking in restaurants or for their business if it's food-related, just not for their families.
No Strict Beliefs
The Amish are notably Anabaptist, which means that they're part of a Christian sub-sect who practice "believer's baptism." Once a teenager becomes old enough to state their own faith and practice it, they become full members of the church that they choose.