He even told Michonne about Judith’s real parentage, something he’d previously been wary of admitting to himself.
So yeah, bringing Lori back in a larger capacity would be pretty impossible.
(Check out what Sarah Wayne Callies thinks about that.)
Team Family is far beyond that horror-filled setting now, and though Rick was in a mental fugue state for a while immediately afterward, where he had audio hallucinations that Lori was still alive somewhere, he’s since moved on in a romantic sense and an emotional sense.