Anything based on the human fantasy can be viable, but maybe a better question can be in which form. Christianity, as an imaginary system of beliefs and rules (aka religion) heavily relies on the willing of its supportes to believe in it. So imo its a matter of personal selection in relation with the people around you as you mentioned. Faith can be something really different from the mainstream definition provided by the media around us.
We are all humans, and no belief is greater that another. Its just a matter of perspective and tolerance ;)
Love the thoughts! Do you think there's value in pursuing ultimate truth? Or is personal selection in relation with the people around us equally valid?
Without trying to sound like a cocky academic, everything is relative haha. What is value and how someone defines it, depends entirely in each individual's POV. Same applies for the 'ultimate truth' althought I have somr serious doubts about the possibility of something like that to exist, since history does always seem to complicate things ;)
So I think it all comes down to your everyday decisions and as the majority of them (hopefully) deals with the people around you, I believe that the way you honestly and consciencously treat others reveals a big part of yourself.