What did you think of Corrigan and his religious convictions/charitable quests? He never moralized to the people he was "working" with. He never really encouraged them to seek a different life. He just offered them various small comforts and a place to use the bathroom and helped them with various errands (like appearing at court dates). Most importantly, I guess, he offered them the feeling that someone cared about them and didn't judge them, the comfort that they had somewhere to go, someone to turn to. His religious charity seemed to consist in asking himself, "What might this person really need right now to feel connected to humanity?" And the answer would be not a lecture, but a hot cup of coffee, or, in the elderly, racist curmudgeon's case, a tryst with the hookers.
And then there's his relationship with the immigrant mother — a chance for love and connection for himself. Why was it hard for him to give into that? Did he think it would detract from his "mission"? That it would make him selfishly concerned with his own happiness?