User blog comment:Usiar/More on Heimerdinger, Turret Positioning/@comment-4270771-20131109093217/@comment-5955640-20131109200740

If they made the turrets tankier it would make you more vulerable to Heimerdinger stunning you or sniping you with the rockets.

It's counterplay. You have to get rid of the turrets if you don't they can chip you away.