How we cite our quotes:
Troy: "If my brother didn't have that metal plate in is head...I wouldn't have a pot to piss in or a window to throw it out of." (1.2.18)
Here's another major source of dissatisfaction for Troy: he had to use his brother's disability checks to buy his house. Perhaps he resents his home in some ways because he wasn't able to earn the money for it himself.
Troy: It's just...[Alberta] gives me a different idea...a different understanding about myself. I can step out of this house and get away from the pressures and problems." (2.1.110)
Troy's affair with Alberta is a way for him to escape the life he's led for eighteen years. It seems like he's become dissatisfied with the role of family man. He was unable to resist the temporary relief his affair gave him. Now that the truth is out and he has another baby on the way, though, it seems like Troy has only given himself more to worry about.
Troy: "It ain't about nobody being a better woman or nothing. Rose, you ain't the blame. A man couldn't ask for no woman to be a better wife than you've been." (2.1.114)
Here Troy claims that he's in no way dissatisfied with his wife. He talks like this throughout the play, constantly declaring to the world how much he loves Rose. It seems like this is pretty hard for Rose to understand, considering that her husband has just admitted to an affair.