You say 'what good does it do to question it?' My answer to you is simply: The Problem of Evil! Gravity is in our best interest only because of the way the world is made. And if God is the cause and sustainer of the world then children suffer as a consequence his creating it. But there need be no suffering; there need be no world. As creatures who had no prior existence there is logically nothing we can gain by being created. Perhaps then we are playthings for the deity?
Cottage
Your whole argument is moot. "There need be no world," indeed! Shame on you! The facts are these: There
is a world, and we suffer in it. You say you don't believe in God, because you don't like suffering. I say I do believe in God because I like life.
You cannot prove or disprove God based upon the presence of evil, nor can you prove God's level of benevolence based upon the presence of evil. The only thing you can prove is that evil exists. Period.
The argument isn't "why evil must exist." That's a smoke screen. Evil
does exist. Where theodicy comes in is "how do we deal with it theologically?
God is benevolent, because God has revealed God's Self to us as benevolent. I can't help it if you don't believe it. All I can do is bear witness to it. You don't get ot lay a bunch of "conditions" on God by saying, "if this, then you must be..."
It just don't work that way.