This post is addressed to theists who still retain belief in an all-loving god and was inspired by the brilliant "beyond the reach of god" from lesswrong - a blog I encourage everyone (and I mean that literally) to read:
For the purpose of this post, I will write as if I was a theist (I am not - I do not believe in any deity) and explain my view why there are some horrors that god can not save you from.
Imagine a world in which 2+2 adds up to 5. Really, try and model it in your mind - how would such a world behave? Every time you put 2 objects into an empty container and then another 2, you find 5 objects. This appears impossible, but within the power of a god physically speaking.
But what if we simply speak of mathematics and logic? If we retain the same laws of logic and mathematics and program a computer, it will still tell us that 2+2=4. God could reach down and alter the physical basis of the computation, but that would not make 2+2=5 in the metaphysical realm of logic.
How reality works
Picture now, the interplay of subatomic particles and what happens in the higher levels of reality, down there in the quantum foam. Even if some intelligence was manipulating the quantum foam, there are facts that continue to be true if we model reality as we currently understand it.
Imagine then, if we build a system that physically simulates the universe using the laws we can observe, a system like this would have no room for miracles or outside intervention.
The concept of a miracle
In many religious beliefs, such as catholicism, exists the belief in the concept of miracles - ways in which the laws of nature can be suspended through direct divine intervention. This is akin to building a simulation of the universe, pausing it, manipulating the state to do something the normal laws of the simulation do not allow and then restarting it again.
In a simulated universe, this would be trivial - and it'd also be trivial for any being with such power over our universe (such as a deity).
But 2+2 remains 4, not 5 - and here i'd like to ask a somewhat mindblowing question: what happens out in the metaphysical realm of universes that follow the original rules of the simulation perfectly? The same original result will always occur in that realm.
The question to ask about our universe
If there is a god capable of miracles, then there are two universes: the manipulated one, and the logical one where cause and effect are all-powerful.
Which one is it more likely that we live in? If divine intervention exists, it creates 2 realities - and what if we live in the one that is unreachable?
Why we live in the universe without miracles
Current evidence suggests that all recorded instances of miracles throughout human history are actually explainable by cause and effect. If there is a god, we live in a universe that can not be reached by god.
Even if you can prove there is a god, this being would be either be bound by cause and effect in this universe, or there is another universe where the horrors of nature can not be avoided. The evidence suggests we live in a natural universe.