It's not like removing a hole in your city wall gives you less control over entry into your city, even though it does remove a method of entry.
This doesn't give users more control, it gives less.
People who wanted to control their own 'hole' might have wanted to let people in that the city elders didn't care for.
It's not like removing a hole in your city wall gives you less control over entry into your city, even though it does remove a method of entry.