I think most would say that you can't really call yourself a Christian if you don't accept the central premise of Christianity, no matter how much the general philosophy appeals to you. It would be like saying...
Yeah but I think if Jesus could comment on this, he would say that his divinity was NEVER the central premise. The teachings were.
"I don't have any aboriginal ancestry, but I still consider myself an aboriginal Canadian because I care about the environment" ...
Bad analogy.
"I still like to eat meat, but I consider myself a vegan because vegetables are an important part of my diet" ...
Bad analogy.
"I don't believe that we should destroy industrial machinery, but I still consider myself a Luddite because I feel like people spend too much time on their cell-phones" ...
Better, but still bad analogy.
"I don't believe that the World Trade Center was destroyed by a US or Israeli government conspiracy, but I do consider myself a 9/11 Truthie because they make an important point about the importance of questioning what we're told"...
Bad analogy.
It's more about the deterioration of epistemic integrity. A guy shows up, takes Rabbi Hillel's teachings and transforms this and says ... "if you follow me, then you need to do this above all things: treat people as you would like to be treated". It's brilliant, as it turns subjectivity about how you are treated by others on its head, and turns it into how to treat others. If everyone followed this, the world would be a better place. If HALF of people followed it, then the world would be better.
Then Saint Paul shows up, and starts promoting this idea. He's on commission so the more converts he gets, the more fame and fortune for him... he eventually martyrs himself but his work ultimately converts the Roman Emperor. Along the way, rumours of his magical powers eclipse the message but the message is still there, intact.
By the 20th century, the message is corrupted and people are using it 180 degrees incorrectly.
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Now, should I be blamed for following the initial message and declaring myself a true Christian ? I say no.
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Another way to look at it: if my mom told everyone she was a hussy would she be right ? Hussy is an old word meaning 'housewife' that changed meaning. Maybe she is right, but maybe she should only tell her friends she is a hussy. I don't tell people who don't know me I'm a Christian, only people who know I am socially liberal and never go to church.