I only came across it a few years ago, I was very encouraged by it. I don't believe in any god, I can't see myself ever taking that sort of step, but I can understand believers better when they allow human agency into their world view. Those who believe that God's only power is via good acts on earth, I can at least sometimes find humane.
I think I can find common ground in a belief in a human ideal, some conception of goodness. I'm never going to call it Jesus, or believe anything supernatural about it, or pray to it, or - least of all - accept the frankly bonkers notion of it, or him, somehow atoning for all my sins, and everyone else's, by dying 'for' them, just to show me how much he loves me and persuade me to follow his example.
(And then, in the practise of this followership, you have to accept the guilt of being an imperfect, fallen, sinful being who can never attain the perfection you worship but must instead live out a life in this vale of tears trying, and inevitably failing, all in the hope of qualifying for a better life in the hereafter. No thanks. Imagine a father - or mother - who offered those unattainable, depressing choices to his or her child. You would call them abusive, possibly mentally ill.)
I do think atheists should pay more attention to morality. The fact that any conceivable atheist morality operates unanchored by any religious views doesn't invalidate it. It is anchored in the long-term practices of its human community, which change, slowly, over time, to reflect new understandings of the human condition and the world. For example, fifty years ago in this country, homosexuality was still regarded as deviant and dangerous so we made laws against it. Now, thanks to certain determined and clear-thinking people working in a sufficiently democratic system, we know better. Those laws were rational in the context of our old beliefs, but wrong. Any religious person who says this moral system is illegitimate because unanchored by some abiding, unchanging belief in an ultimately ineffable deity (who has, nevertheless, handily vouchsafed us some holy Scriptures) must continue to defend moral practices that are thousands of years out of date. Add temporal power to these beliefs and you have the recipe for religious tyranny.