Not wanting to get too involved into this discussion, but announcing the virtue of a religion to adapt... isn't that in essence saying, that the teachings of a religion are not set in stone?
And if that's the case, why have the religion at all?
If those teachings can be changed on a whim or be discarded just because there is new undeniable evidence to the contrary what is their actual worth?
people are flawed, so is religion. Rigid views that can't adapt are comforting to some, but can marginalize an organization over time. Personally, I respect "cafeteria christians" more than whole-hog doctrinaires, because they've at least thought about their religion, rather than allowing someone to dictate to them.
What you are left with is the god of the gap to fill in the blanks that we have not yet discovered, and since we learn more every day, those gaps are getting smaller and smaller.
It will inevitably reach the point where god (any god) has to hide behind the threshold of unobservability, which is in what we call the big bang today.
But a god that can only exist behind that threshold has no influence on anything in the observable universe and can be treated as non existant and has no say in how we live our lives or how we treat others.
Plenty of people 'see' the hand of god (by whatever name) in their everyday life. Shall we disenfranchise them and call them fools for seeing Mary in a muffin? Beyond that, churches are social clubs, and give children a good early exposure to a moral code. Shop around and you'll find a variety, ranging from infallible KJV bible zealots to barely-recognizable as religious unitarians and non-denominationals, wiccans who only believe in skyclad sex magic, pagans who earnestly and strictly believe in Gaia, buddhists who hardly deserve the name and those who are a shoe-in for nirvana. They help some people, and comfort others they don't directly help. That's good enough reason to let them be.