Since I always watch/read something before judging it...
First, let me say I think Bobby killing himself was a tragedy. Gay or not, it's always sad when someone decides to take their life.
I think the movie was horribly offensive. I expected homosexuality to be portrayed in a positive light, so no surprise there. But the mother was portrayed as a total witch just because she voiced that God didn't make anyone that way, and that Bobby needed to try to help himself be cured. They even said it was her fault he decided to commit suicide. Again, that was a horrible tragedy, but it was in no way Mary(the mother)'s fault. She was just saying what she knew to be true. Her grief for her son even forced her to right for gay rights, because she so wanted to believe her son was in Heaven.
Like I said, I knew this was a pro-homosexual movie, so I wasn't at all surprised when they showed it was a "good" thing. But to show the mother as a total nut just because she loved God was too much!