I do believe in the atonement, it brings me peace and joy, as does trying to follow the commandments of a loving God who only wants the best for all of us. I lived without God's guidance for a big chunk of my life, and find that life is much better when I don't fight against what God would have me do.
I see a lot of anger, and pain, and mistrust on this thread. Many are unable to clearly see the people around them because they have learned to live in a defensive/untrusting/paranoid state. You want a scapegoat to blame, and so you imagine what lies within the hearts and minds of others... If you were able to put aside your paranoia and defensive walls for a bit, you might be surprised to find the people around you are not as unloving as you think... that they have a lot more love for you, then you have for them...
One thing noticeable throughout the centuries is that those who are on the side of hatred, ignorance, discrimination or injustice rarely flat out admit to it or even perceive themselves to be that.
Very few people ever say, "Yes I'm hateful, and my actions are out of hatred and irrationality and my arguments are poor" despite much of the world's problems being due to hatred.
When slavery existed, people in favor of it didn't make the argument: "Yes, I'm in favor of slavery. I'm immoral and selfish and history will forever view me in the wrong." Instead, they used attempts at reason and Biblical claims to support their institution.
When women didn't have the right to vote, most men didn't say, "Yeah, I'm sexist. I like feeling superior. I'll be on the wrong side of history forever" Instead, they made arguments about women being of inferior minds, as though they held the rational position.
When minorities were fighting for equal civil rights, and people opposed them, they didn't say, "Yeah, we're bigots. We're in favor of inequality and discrimination. We enjoy being on the negative pages of history books." Instead, they argued for 'separate but equal' (which was not equal).
Now, when consenting adults want to marry and people who have no business imposing on their lives end up imposing on their lives anyway with legal discrimination of marriage based on sexual orientation, none of them ever say, "yeah, we're homophobes. We hate. We're on the wrong side of history too." Instead they argue that 'God' is on their side and that homosexuality is weird.
And frankly, many of them are partially right. They don't view themselves as hateful or discriminatory or ignorant of the views of professionals on these issues. My family members that are against gay marriage despite knowing nothing about it and having no rational basis against it are loving people in 90% of their lives, but it doesn't change the fact that their voting habits are hurting people and that 20 years from now, history will very likely view their side as being clearly in the wrong.