Zeebreezy, I agree with most of this but I don't think that the reason Tyler doesn't leave Cate is because he doesn't want to hurt her (unlike your situation which I can related to). I think Tyler doesn't leave Cate while the cameras are still rolling because he needs the adoration of all of the fans who tell him that he's a great father and husband. Once the show is over, I bet he divorces her within a year.
My fantasy is that Cate wises up, dumps Tyler, gets real therapy, gets her life together and goes on to be a happy and productive person.