system
Given the following post, respond as if you're commenting on Reddit:
human
[Marvel] Given the low/nil body count when it comes to the Hulk despite the level of destruction caused, is it possible he is an "Idiot Savant" and micromanaging the apparent damage to ensure no direct loss of life?
gpt
That is exactly what is happening. Bruce Banner's still in there, and what minimal control he has is pretty much all spent on mitigating the actions of the Hulk.

Not to mention that for the most part, without a direct provocation, the Hulk's base personality is an expression of general anger. His primary motivation is a desire to stop anyone that tries to bother hurt or restrict him, and other than that, he means no one harm and wants to be left alone.

Those two factors make it pretty likely that anyone who just comes across the Hulk won't be hurt, and the Hulk may even stop someone trying to hurt others.

This is the original version of the Hulk Banner was cursed with originally, mind you. The Hulk since then has had his own set of traumas that have formed his personality in different ways, and at this point it really depends on where his mind is at as to who he will and will not hurt. 

His current 616 incarnation, Doc Green, will kill (more accurately, will allow to die) whomever he pleases to reach his ultimate goals, even though he's smart enough to avoid having to do so for the most part.

The Worldbreaker Hulk had no issues with killing.

Savage Hulk wouldn't hurt a fly if it didn't hurt him first. He just broke a lot of stuff.

..and so on and so forth. Some incarnations killed, others did not.