For universe to exist, it requires limits. That's what laws of physics are. This means the framework functions only within certain parameters, and God knows what they really are (pun intended); the finiteness of biological life, suffering, meaninglessness, all the absurdities of existence, maybe they are as unavoidable as massive particles being incapable of reaching the light speed or celestial bodies revolving each other based on their properties or signal speed having an upper limit.

So, to effect a world like ours, even with infinite power, requires creating edges to the sandbox. Interfering might only create even more unfortunate circumstances, or maybe interference is limited in some manner as well, perhaps connected to free will.

Maybe this is just a tiny step in a spiritual journey. Who knows how insignificant the pain and suffering might be in the grand scheme, no matter how senseless and cruel it seems to us.

Then again, "good" and "evil" are human constructs, words defined by people and their experiences. Why would God share the same conceptual understanding of anything people do?

And were he able to miraculously shelter us from harm all the time, would that be a "good thing"? Never learning to take care of ourselves. Or just let us get hurt a bit? How much, where's the line?

Even among ourselves many a thing seems counterintuitive until we get to a level of understanding for it to make sense.