War because of the power and pride of great men against us. But God.

Now after this there was war with the Philistines at Gezer; then Sibbecai the Hushathite put to death Sippai, one of the offspring of the Rephaim; and they were overcome.
1 Chronicles 20:4

Why is the world the way it is?

For this reason God gave them up to the evil desires of their hearts, working shame in their bodies with one another:
God gave them up to the evil desires

Because by them the true word of God was changed into that which is false, and they gave worship and honour to the thing which is made, and not to him who made it, to whom be blessing for ever. So be it.
Romans 1:25