Bartricks,
You ask if Christianity has a sound philosophical reason for believing God created the world.

I surmise Christianity makes a metaphysical commitment to creation of the world by a conscious, intelligent designer.

By this belief, existence has an innate design and also a purpose that gives the bible a role to play as teacher and guide to humanity regarding how it should live its life.

Evidence of the Christian commitment to creation by intelligent design is opposition by some Christians to evolution without a supernatural intelligent designer.

This reveals another aspect of the Christian metaphysical commitment. It says life creation is peer-to-peer, meaning life only from prior life.

This opposes some physicalist persons who posit life arising from lifeless organic compounds sparked by lightning into life.