You don't have to believe in God to be a Christian: http://en.wikipedia.org/wiki/Christian_atheism
Likewise, I don't think you have to be Christian to admire Jesus. I don't believe in original sin or any of the other trappings of Christianity, but respect Jesus as someone who challenged the status quo. Like the sages of Hinduism, I think Jesus realized that 'God' was cultivated through the self. In my view, his experience was constrained by the theology of his culture.
smiddy wrote: The reason a person is a christian ,basically is because they were born to parents who were, if not practicing christians then at least nominal christians and so they go with the flow.
I agree. Most of the people who claim to be Christians would be Muslims if they were born in the middle east, or Hindus if they were born in India. Most people are accommodationists, and adopt whatever beliefs that are most socially convenient for them. The bold few step out of line to explore other ideas.