What's the rationale behind no refrig and no microwave in the dorms? They use too much energy? They pop a breaker every once in a while?

At college, 1987-1991, we could have fridges, microwaves in the dorms. People also had electric tea kettles for making ramen noodles. And people often ordered pizza. But we also had a kitchenette on every floor (it was the honors dorm).