Calvinist predestination includes the terrors of reprobation, as Luther, a Calvinist, describes. Luther: "That ... God ... should of His mere will, leave men ... and damn them, ... seems ... cruel, intolerable; and it is this that has given offense to so many and great men of so many ages. And who would not be offended? I myself have been offended more than once, even unto the deepest abyss of desperation; nay, so far, as even to wish that I had never been born a man."
Calvinist predestination is predestination to faith, directly or indirectly, so God can choose who gets saved and who doesn't. That's the heart of Calvinism, what defines it, and sets it apart from all other beliefs. Augustine: "Elected to believe. ... Called ... that we may believe." Calvin: "We were ... ordained to faith in Christ." MacArthur: "Those ... effectually called ... to saving faith." Piper: "'His people' are those ordained to believe, ...choosing them for this." Sproul: "We are elected to faith." Westminster Confession: " Those] elected ... are ... effectually called to faith." But the Bible never says we're predestined, chosen, or called to faith. Biblical predestination is predestination to sanctification and glorification, so God could ensure us a holy walk and eternal security. It's a message of joy, because whatever God predestines for us always comes to pass without fail Hallelujah Chosen to Sanctification