Instead of "Total Depravity" Let's talk about a related subject and see where we might gain insight. In Romans chapter one, Paul seems to wrap up the entire human race under a particular form of unbelief based on how a human being responds to the existence of God. His wrath is poured out against unbelief. Does Paul convict the entire world of the following?
Romans 1:28-32
And just as they did not see fit to acknowledge God any longer, God gave them over to a depraved mind, to do those things which are not proper, being filled with all unrighteousness, wickedness, greed, evil; full of envy, murder, strife, deceit, malice; they are gossips, slanderers, haters of God, insolent, arrogant, boastful, inventors of evil, disobedient to parents, without understanding, untrustworthy, unloving, unmerciful; and although they know the ordinance of God, that those who practice such things are worthy of death, they not only do the same, but also give hearty approval to those who practice them.
Did God give us all over to a depraved mind? Maybe, maybe not. That's a question worthy of discussion. Do I fall somewhere on that list? Maybe I used to be on that list but now I am different. What made the difference? What explains my conversion experience? And why doesn't everyone have a conversion experience?