I'm sure someone has thought of this before, but I think science can only give some of the answers. For instance, science says that the universe was created in a big bang, but where did the material for this bang come from? Who or what causes the bang? Or what drew the matter together to explode?
I always just come back to that one point that someone made (I have no idea who): if you found a watch in the woods would you assume it just randomly grew there?
The world and the universe have to many moving parts that fit perfectly together for it all to be random chance.
Blessed be the Lord.