We have free will. God won't mess with free will. He doesn't intervene in anything really. Why does he not? You can think of lots of reasons. It makes sense to me if I think of God as being unable to, or as being so wise as to know he shouldn't. The do nothing principle. He just lets us exist. I don't believe in miracles.
Discussion
We can't always know why something is good or even that something exists right away. All we can do is fuck around and find out. I don't take my lessons from authority. I get messy and use my reason. Never was one for just regurgitating what church heads said.