I've been dived from 100% the instant I entered lane four times in a row as Ziggs
Level 7, Annie flashes into me with Ignite. Dead. Return to lane, Jarvan is waiting and jumps on me with ult as soon as I reach the tower. Dead. Return to lane, Nautilus roams from top, flashes into me, and ults me under the tower. Dead. Return to lane, Jarvan once again jumps on me with ult as soon as I reach the tower. Dead. At this point, the tower was taken. If I had returned again, Annie's flash would have been up, allowing a fifth dive.
In all of these cases, they all got out without taking any significant damage.
This is really fucking stupid. Towers should provide some form of protection, especially at the point in the game where solo lanes are only level 7.