Genesis 42:38

‘And he said, “My son shall not go down with you, for his brother is dead and he alone is left. If mischief befalls him in the way in which you go, then you will bring my grey hairs with sorrow to the grave,” '

His father refuses the offer. His words reveal how much Rachel had meant to him. She had had only two natural born sons. One is dead. He cannot bear to lose the other. Under no circumstances will he let Benjamin go. Benjamin is all of Rachel he has left. Thus is Simeon left to his fate. But if we think of blaming Jacob we must remember that he has every cause for thinking that Simeon's fate has already been sealed as is witnessed by the return of the silver. It is clear the Egyptian lord had evil intent towards them and so as far as he is concerned Simeon is now dead as well. And this is how things would have remained had it not been that the famine went on and on and forced the issue.

“My grey hairs in sorrow to Sheol.” Men desired to have a full life and die content. To die in this way was seen as a tragedy, they would surely not want him to die in unrest?