“What sort of a heart could approve of eternal death for some? The doctrine of Universal Salvation teaches that all will have eternal life, including Satan and the demons. And that one day, all will have the same nature as God. What sort of a heart could not approve of Universal Salvation, eternal life for all?”
It boils down to this: anyone who wouldn’t grant eternal bliss, joy, happiness and God-likeness to Satan, Hitler, Stalin and every liar and murderer in human history that hates and rejects the Son of God is, well ... insufficiently morally developed.