Predestination is an unscriptural teaching that slanders God.
false teachings, including predestination, do not glorify God. so it is no good at all.
Predestination is a God-centered and Christ exsulting teaching that gives God all the glory. It puts God where He is (as Sovereign) and man where he should be - low in humility where he can do nothing but trust in Jesus to be the propetiation of his sins. If any man come to me, Jesus said, I will in no way cast out. All that said, this could only be "nice talk" from a Calvinist.
Why do you feel it slanders God?