The doctrines of grace shatter all pride, and once the shell of pride is gone, what is left is not pretty. What is revealed is that we are stinky, rotten, filthy, wretched, sinners, that Christ alone is our righteousness, that if there be any good in us, it is Christ. It feels good to think we have some kind of role, a say, even if it's not thought of in that manner. Unfortunately, they confuse sovereign common grace with sovereign saving grace. One of the reasons I think, is that we see unregenerate people doing things that are "good" in our eyes...even if they do not please God. We see that, generally speaking, even the worst of people seem to have a little "good" in them, at least it appears that way in our eyes on the outside. But in the Bible we read that whatever is not of faith is sin, and it's not a generic faith, but faith in the God of Christianity, faith in Christ. Calvinism has a way of peeling away self-righteousness and spiritual pride. That is what Sola Deo Gloria and a high view of sovereignty will do in practice. Most people look down on this, the notion of stripping self-worth, of trusting in God and not one's heart, is utterly disgusting to them. We like to think well of ourselves, our natural instinct is to defend everything we say and do. Reminds me of the words by a favorite musician of mine...
We are frail, we are fearfully and wonderfully made
Forged in the fires of human passion
Choking on the fumes of selfish rage
And with these our hells and our heavens
So few inches apart
We must be awfully small
And not as strong as we think we are