@davidtaylor0390@CarverMelton What did Jesus say in the Garden? If redemption could be accomplished without His drinking the cup, He asks that it be so. IT WAS THE ONLY WAY. The answer to your question is, IT WAS THE ONLY WAY.
@davidtaylor0390@jlreeve0828 The "why" is that God's plan is the only way to, in the end, have a race that freely chooses to love Him. It does not in any way limit God to say that He cannot create a deterministic universe in order to elicit genuine free will.