Here's a quote from C.S. Lewis to chew on a bit!
"If Christianity only means one more bit of good advice, then Christianity is of no importance. There has been no lack of good advice for the last four thousand years. A bit more makes no difference."
C. S. Lewis, Mere Christianity (1943)
Hat tip to Creedal Christian:
Creedal Christian: Christianity Is Not One More Bit Of Good Advice