I can see why the dad had an affair
I've binged watched this series on HBO Max. Mary is a major pain in the ass. She's the ONLY character on the show that's irritating. I can only recall her having 1 or 2 funny lines in 3 seasons. I grew up in church, and hated it even as a child, so I get a kick out of Sheldon's occasional sparring with her about her beliefs.
Other than her, this is a really entertaining show.