Sharing information would be revealing our role, and revealing our role would get us lynched/hunted, depending.That is wrong.
The villager knows nothing.
The Hunter knows that if he survives to the end of day 2, the village will win.
The Seer knows if someone is or is not a wolf.
The Sorcerer knows if someone is or is not the seer.
And lastly the wolf knows who he has to kill someone else.
I hardly call that nothing, there is information out there, but if no one will share it, it does no good.
Which is why we need PM´s.