Faith

As with all beliefs and interpretation, all can be justified if you choose to as justification is merely a point of view.

Perhaps it is fine to believe that Earth is the center of the universe, rest is heresy. 

Fine to believe that every single creature was being created at one point, rest is heresy.

Fine to believe that evolution is part of the creationism process, in a grander scale, rest is heresy.

But perhaps the greatest faith of all is to see that all is now and now is all, that time is a gravitational concept and a new world shall be revealed to us if we can travel faster than light. That after centuries of justifying a 5,000 year old scripture that humans can finally come at peace with oneself and accept that immortality is merely a reflection of human desire. That seeking for a life after death is just as foolish as the Egyptian's practice of mummification.

And that to create is merely human. Spontaneity is grand.

I find it absolutely puzzling that people are so willingly jumping into a religion -- an adoption of a lifetime's faith which dictates one's origins and one's "end", without understanding all the options out there but simply following the established ones. Just like a sound investment, shouldn't you attempt to understand everything first before you decide?