If a supposed omni-benevolent being doesn't act very benevolently, then you really have to question that beings' existence.
No it doesn't. The longevity of the flat earth theory counted for shit when we had photographic evidence that the earth was round. So even the oldest religions can be wrong.
When you look at the history of what we know about the world, you see a noticeable pattern. Natural explanations of things have been replacing supernatural explanations of them. Why the Sun rises and sets. Where thunder and lightning come from. Why people get sick. Why people look like their parents. How the complexity of life came into being. And a hundred other exameples...
All these things were once explained by religion. But as we understood the world better and learned to observe it more carefully, the explanations based on religion were replaced by ones based on physical cause and effect. Consistently. Thoroughly. Like a steamroller. The number of times that a supernatural explanation of a phenomenon has been replaced by a natural explanation? Thousands upon thousands upon thousands.
Now, the number of times that a natural explanation of a phenomenon has been replaced by a supernatural one? The number of times humankind has said, "We used to think (X) was caused by physical cause and effect, but now we understand that it's caused by God, or spirits, or demons, or the soul"?
Exactly zero.
Sure, people come up with new supernatural "explanations" for stuff all the time. But explanations with evidence? Replicable evidence? Carefully gathered, patiently tested, rigorously reviewed evidence? Internally consistent evidence? Large amounts of it, from many different sources? Again -- yep, exactly zero.
Given that this is true, what are the chances that any given phenomenon for which we currently don't have a thorough explanation - human consciousness, for instance, or the origin of the Universe will be best explained by the supernatural?
Given this pattern, it's clear that the chances of this are essentially zero. So close to zero that they might as well be zero. And the hypothesis of the supernatural is therefore a hypothesis we can discard. It is a hypothesis we came up with when we didn't understand the world as well as we do now... but that, on more careful examination, has never once been shown to be correct.
If I see any solid evidence to support God, or any supernatural explanation of any phenomenon, I'll reconsider my disbelief. Until then, I'll assume that the mind-bogglingly consistent pattern of natural explanations replacing supernatural ones is almost certain to continue.
Greta Christina.