why not?
For God hath concluded them all in unbelief, that He might have mercy upon all
(Romans 11:32)
is that verse true?
what does it really mean?
You should read the entire chapter rather than cherry pick and think that verse sustains Total Depravity.
Total Depravity, if TULIP were true, fashions a god that plays wicked games with himself.
It is straight out of the pit of Hell.
TULIP tells us of a creature that makes people to be totally immoral, totally depraved, absolutely incapable of righteousness, right-ness, any good thing at all. Pure evil at birth incapable of knowing the god that fashioned them that way.
Then the rest of the TULIP doctrine tells us that the god that made all the worlds people to be that way did so with malice of forethought and premeditation.
Because prior to that creation he made a list of names of those future depraved one's whom he would put into his grace. Being he didn't show grace when he made them. And in the process of that, he would also let them to have faith in him, the creator of a totally depraved human race. All of whom would enter the Hell he had created first for his first and most beautiful and intelligent angel, Lucifer, and those angels that followed him. But actually, he had to premeditate sending humans there too because that god does not change. So if he decided to send humans to Hell at any point in scripture, it had to be that he had made that decision before he created the world. Just like the entire predestination, pre-planned creation he made after he fashioned that list of people he'd "save" to his irresistible grace.
This means before the heavens and the earth came to be, that TULIP god predetermined total depravity of all future created humans.
Which means, that condition did not pass to humans through Adam. It means that TULIP god predetermined the fall, prearranged total depravity. Because otherwise why would he need a list of people whom he'd elect to save in that condition he'd made them to suffer unable to choose to have faith of their own accord?
Calvin was a demon. A sadist and an egoist. And those that follow his teachings are lost in error.
Calvinists like to dismiss John's part in the murder of Servitus. Oh, he wanted him to be put to the sword instead of being burned alive. No, John Calvin wanted him dead. And it happened. Slowly.
From the letter John Calvin wrote to Thomas Ferrell dated February 13, 1546 :"If he [Servetus] comes [to Geneva], I shall never let him go out alive if my authority has weight."
Calvinism doesn't save. It damns.