David Foster Wallace's "Good People"

This was a tough read. David Foster Wallace left a lot open to interpretation. Lane has a hard time, but is convinced that it's the best idea, to go through with the abortion. He said he could always draw a "bring neon line" between good and evil. I think he wants to think he is good, but is trying to convince himself of it. He knows his religion says it is wrong to have an abortion. Sheri is sought out as not good either way. If she has the child out of wedlock she embarrasses her family with a "bastard" child and if she has the abortion, well that's sinfully wrong as well. It changes in the end when Lane has a "moment of grace" and envisions Sheri telling him that he can have an out, but she can't go through with the abortion. Then he decides that she will let him try to love her. Is his new outlook on himself, Sherri, a higher power, or just the sincere desire to be good? I think he wanted to do "right" all along, but maybe was scared of the responsibility and not getting to finish college. Like I said, for me this was a tough reading, and Wallace leaves a lot open for interpretation. Who was the man standing by the lake? Was he symbolizing God watching over them carrying a baby? Was the tree that he kept going back to a symbol of their faith being uprooted by the giant decision of their faith vs. what Lane wanted? It was a really good story and makes me want to read another one of Wallace's work.