Well, this is the life we have chosen. Going back there won't bring her back. I don't think she'd want him to throw away everything either. The other family members are probably pissed at him for being here in the first place living the life in the US and driving in his big car in big gold paved roads with everything good happening to him while they're stuck in the hellhole so this is just something else to pile on. His mother is with him in spirit. Nobody can take his memories away.