As an atheist I have looked at and into, (to a greater or lesser degree), Religion(s).
There is no single one which I would choose, given the choice.
If I could cherry-pick from religions and philosophies and build my own hand-book for living a good, decent, moral, non-judgemental, accepting of all life-style, I would..........and then again, I believe I already have, without recourse to any sort of God.
This is why atheists cannot answer your question with the brevity you seemingly require.