Vlad,
Suggest you take it up with those who claim it for their "God". As I understand it though, "Little Timmy died horribly of brain cancer did he? That'll be my lovely god working in mysterious ways then" is a fairly common piece of Christian casuistry when reality collides with dogma.
Why did he die from brain cancer?
reality ...isn't dogma part of reality.
Are you going to die bluehillside? What will be the cause and why? Will you die anyway eventually?
Not sure why you believe pain and suffering came from God. It is clear that man himself caused pain and suffering by handing himself over to Satan. God can make the changes and save anyone. People don't die because of God they die because of ignorance about his word.
What is it which makes you think the above is some argument against God? Or is actually relevant when it comes to God.
Man caused his own suffering because as you do now, they did not listen when told what would harm him.