Quote Originally Posted by GFX707
Plus you don't have to repair them afterwards....
A few times I had taken sections of the walls down to get troops in there quicker. I won the battle and captured the city, but forgot to repair the walls. The enemy soon came back and assaulted my city... the holes in the walls were one of the factors that lead to my defeat and eventual loss of the city.

Busting open gates doesn't destroy them, thankfully.