learnt the Christian parables when I was little and none of the sin stuff and basically they are about being kind to everyone even those who are different to you and thankful that you have a good life and to lead a simple life.
I agree that the principles behind many of the parables are sound and should be taught to children (and, indeed, many adults), I don’t think you need a god to back them up though.
FWIW, I, with my atheist tendencies, was most impressed at a christening service for a friend’s child by the vicar’s interpretation of the tale of the good samaritan. He looked at it in a couple of ways that I’d never though of, but, again, a god wasn’t necessary in that interpretation.