Are my sins really that bad?

"In his act of self-sacrifice on the cross, the fathers argued, Jesus lured the dark powers into the open and away from the human beings who had been in their thrall." excerpt from, The Most Unexpectedly religious film of the year, by Bishop Robert Barron.
After reading Bishop Barron's commentary on The Quiet Place, 2018, my mind began wondering over the father's self sacrifice to save his children and how this could be compared to God the Father's plan for humanity in the sacrifice of his only begotten son, Jesus; and I thought to myself....does anyone today think their sins are so bad they should die because of them? Most people I talk to have a pretty good opinion of themselves and when confronted with the reality of their sins will say, "I just ask God to forgive me and He does".
Okay, that is all very well and good, but what about the sin committed? Was it so bad that one should die because of the sin? Personally, I think we have collectively all gone far afield of what God thinks of sin - immoral acts; and, perhaps we really don't understand how devastating sin is in our lives. It is too easy in this modern culture to be distracted, look the other way, deliberately forget about the sin. Therefore, we never truly develop a sense of mortification for our deeds that so displease God.
So, what does that do in regards to the great sacrifice of God's son, Jesus? It seems logical to think that if one does not think one's sins are really all that bad, and certainly not bad enough to die for, then Christ's sacrifice isn't......well, you know where that leads. Heaven forbid that our hearts should be so hardened that we are not truly cut the marrow of our souls each time we sin. Pray for these things that you might have a tender heart: mortification of spirit, habitual contrition through the gift of compunction, for tears of sorrow for our sins, for the grace to pray well, for perseverance, for docility toward the Holy Spirit, for discernment of spirits, and finally for the gift to distrust oneself. Do not place any confidence in yourselves, but in God alone.