The reason for Al being so miserable with Peg was deeper than just Peg getting on his nerves or Al being bored with her.
In high school Al was the man, the star football player, who likely was going to ball in college somewhere on a scholarship. But then he knocked up Peg and he threw all that shyt away to go find a job to provide for his seed and ultimately his wife
In his eyes, it's all Peg's fault for how his life wound up with the same grind everyday while her lazy ass got to sit on the couch and eat bonbon's all day watching Oprah
Dude felt that Peg legit ruined his life
That was some real ass shyt about the married working class man they were showing us every week