Brendan Conlon is a materialistic fool (SPOILERS)
This character was okay, but not 100% likeable. He was doing a second job that he didn't want to do (UFC) to keep the house, it's pathetic. Even his wife said in one scene that she doesn't care about the house, he then said that he's not getting rid of the house and that there's "memories" there, well you know what? You can make NEW memories in a NEW HOUSE!
They had three jobs between them, it's ridiculous, it's surprising that they actually ever got to spend any time at home with their kids.
At the end of the day a house is just bricks and water, why go to all of that trouble to keep a house that they could no longer afford, it's insane.
What they could have done was get a smaller house or a flat / apartment in their price range, so that he wouldn't have to fight in sleazy places on the side.
I don't really have any sympathy for this character except for the fact that Tommy withheld him from seeing their mother before she died.