“What about non-Christians? Why does God create them? He knows what their choices are going to be. He even knows that they will be non-Christian, before He creates them.”
As it is written, “Jacob have I loved, but Esau I have hated.”
What shall we say then? Is there unrighteousness with God? Certainly not! For He says to Moses:
“I will have mercy on whomever I will have mercy and I will have compassion on whomever I will have compassion.”
So then it is not of him who wills, nor of him who runs, but of God who shows mercy.
For the Scripture says to the Pharaoh, “For this very purpose I have raised you up, that I may show My power in you, and that My name may be declared in all the earth.”
Therefore He has mercy on whom He wills, and whom he wills He hardens.
You will say to me then, “Why does He still find fault? For who has resisted His will?”
But indeed, O man, who are you to reply against God? Will the thing formed say to him who formed it, “Why have you made me like this?”
Does not the potter have power over the clay, from the same lump to make one vessel for honor and another for dishonor?
(All of the above except your question is Romans 9:13-21)
Was all that an answer?