There was no point in Sasuke's journey leading up to him learning the truth of the murder of the Uchihas - and honestly also for a very long while after when the goal simply switched from Itachi to the Leaf - that Sasuke thought he'd continue living on after his goal was completed.
He fully intended to die along with Itachi, or at least very soon after. ( And was fully planning on sacrificing himself just to take out the leaf village. )