Anyone would have to be sorry if they believed Calvinism was the gospel. The Calvinistic gospel goes like this...Out of everyone He has created, Calvinists say He selected some to be saved, and then by default, selected some not to be saved. It was an unconditional election. Nothing he foresaw in them, like faith in Jesus, that caused him to select them. It was unconditional, just by “God’s good pleasure”.
If Calvinists would think about this, they’d have to agree that people are saved not by grace, but they’re saved by chance. A flip of the coin. There’s nothing that God saw in anybody that caused him to select them. He just selected them. It’s random. It’s not an election at all.