I'm just quoting scripture. It says all have sinned. It seems you imagine that the term "totally depraved" means that you are as wicked as you could possibly be. I have never heard anyone say that.
What do you think "total depravity" actually means?
What it conveys to me is that we are by nature in rebellion to God and we fall short of what God originally designed us to be. Every part of our nature has been corrupted by sin. Is there verses that convey that humans are by nature good?
We need to clarify these definitions of Good and Evil. Because I've learned a Calvinist could look at a particular act just having the APPEARANCE of Good and still call it GOOD and evil at the same time.
So lets start off with Good. If it has God as its source and is sincere Love of God and Neighbor. That is GOOD. Everything else is EVIL lets just call it evil.
For example if a reprobate sacrifices his life to save the life of another person. You might say that is GOOD, but his motives are untrue, it was not in sincere glory to God, probably selfish motives. Its actually evil.
Lets avoid the vocabulary gymnastics. When someone says totally depraved THEY ARE INDEED as wicked as they could possibly be. There is nothing they can do in which is considered GOOD in God's eyes. Everything they do is WICKED in God's eyes. Filthy rags is a favorite term.
If it does not have God as its source it is absolutely evil. We might have differences where that brick wall is. I believe in the GOOD SAMARITAN for example. Other folks think he is damned.
We see when Jesus is challenged for doing Good works its not a new tactic to say he did those things through serving Satan not actually "GOOD" in God's eyes.
Matthew 12
24But when the Pharisees heard
this, they said, “This man casts out demons only by Beelzebul the ruler of the demons.”
25And knowing their thoughts Jesus said to them, “Any kingdom divided against itself is laid waste; and any city or house divided against itself will not stand.
Evil will look for ways to disqualify Good done of another.
"Every part of our nature has been corrupted by sin."
Thats the point Augustine tried to make is if every part of you is already corrupted then essentially you are already destroyed, nothing to save, you are equately evil as murder and rape. God does not have to "SAVE" murder.
See Sin is not NATURAL. it is UNNATURAL, it is the abomination and corruption of Good. If everything GOOD about you is destroyed then you would be completely destroyed. Already in a state of hell separated from God.
"originally designed us to be."
Again if you go contrary then your behavior is UNNATURAL.
Lets keep it clear for anything to be GOOD it requires God as its source.