I understand your frustration and grief but do you think being angry at God or trolling people who believe in Him will stop Malaria or bring those innocent souls back? If people stopped believing in God over night, do you really think it will make things better? Do you really think that without God people can be reasonably and clearly objective. In my opinion, it is just as unreasonable to hate or ridicule those who believe in God as it is to believe that God can and will solve all the worlds problems or that he can be so easily scapegoated and rob the accountability of the individual.
Again, I get where you're coming from but I'm not sure what good it does to do it this way. I once thought as you do. That people were foolish to believe in an invisible man in the sky. And you're right, many people who do are quite foolish but it is not foolish to be optimistic. It is not foolish to teach kindness. It is not foolish to be charitable and learn humility. I agree, many Christians fail at this basic tenants but I do not think you serve a good purpose in letting all that good waste away in service to quell your own frustrations.
I hope we can understand one another.