RW, it is ambiguous whether you take God (or Gods) as a metaphorical or literal entity. Do you believe that God exists in reality, in a form that couldn't be better described as simply a mechanic of the universe, or indeed, the universe itself? That's my problem with pantheism - why call the universe "God", when one could simply say "the universe", except for poetic purposes? Why bother at all?
Which God do we talk about? They all have different personalities. Perhaps we talk about the concept itself.
If we are to talk about the concept, I'll talk about my beliefs (very appropriate term here...). God is basically a human with superpowers. It has the attributes a human has, just blown up to perfection - evolutionary perfection. A manifestation of what the perfect human would be; all-knowing, all-controlling, all-powerful. That's what we all want, right? Life wants to rise above everything else.
So, going by that, the answer to the original question, "does God want what's best for us?", then that is really, "do we want what's best for us?", that answer to which is
mostly yes. It is how we have survived for so long. By being socially connected. There is "evil" in every species.
Now on the subject of if God actually exists in itself. "Best" is subjective and may be a human-exclusive concept. Why would a God, that created the
entire universe - and all the other life-forms within it, with their own concepts - go by such subjective values? "Best" isn't even objective relative to other humans.
Same with "good" and "evil". What are they really? "Good" is just change we approve of. "Evil" is change we dislike. Both of which apply to change created by other humans. The universe is just a ball of constant fluctuations. That's probably how a God would see it primarily. "Good" happened - a fluctuation. "Evil" happened - another fluctuation. It's all change, that is all. So what if humans become extinct? It would be like flicking some atoms off a piece of dust.
When we gaze upon our world, it's clear that it's all corrupted!
No it is not, it's just in a particular form that humans dislike.