My first thought was that this is slightly embarrassing for religion - making it ultimately a matter of biology not revelation. If you believe because you were always going to believe and not because you chose to take a leap of faith isn't that reductive, even embarrassing, for those who hold that God freely gave them religion? It has nothing, ultimately, to do with truth. Or even 'Truth', if you prefer.
Then I read this article by Nick Spencer, a director at Theos. He argues that the God gene could work in a totally different argument - that it is suggestively consistant with a divinely created universe. Evolutionary advantage could suggest that:
Not only does God tilt creation towards life, and life towards sentience, and sentience towards intelligence, and intelligence towards morality and wonder, but he tilts that package of intelligence, morality and wonder that we call human nature towards himself. Creation delivers us to God's doorstep and bids us only knock at his door.Of course it doesn't prove anything - transferring from helpfulness or inevitability to truth or goodness jumps Hume's is-ought gap - but perhaps it's less of a problem than I thought.
Spencer concludes saying its bad news for the atheist who must defend his/her beliefs for their 'unnaturalness'. I'm not sure he's right, there seems something rather noble about being unnatural, and this is where I worry that the God gener might still be bad for religion.
If religion were weird or 'unnatural' it would give religious faith a valourous, against the odds sense of overcoming an 'animal' disposition. What greater obstacle to overcome than genetic disbelief? Bigger than martyrdom or persecution. And what is the effect on personal experience - for the fool that saith in his heart there is no God, but trusts in him anyway?
The most reasonable answer is probably that of Michael Argyle, as quoted by Spencer:
psychological research can tell us nothing about the truth, validity or usefulness of religious phenomena: these are questions which must be settled in other waysHe is, however, only repeating the conclusions made eloquently by William James in Lecture I of The Varieties of Religious Experience. The 'nervous' causes of any belief do not determine our judgement of it, which is based rather on other values (how pleasing it is, how well it fits with other beliefs, etc). As the mad genius is no less a genius for being mad so the mad believer is no less true or insightful for his madness.
There are few denominations which are spread as evenly across race, class, age and gender divides (not that the C of E doesn't have a long way to go on some of these). The Episcopal Church is a far more middle class institution than plenty of innercity C of E churches.
Joining in willingly with a bunch of people who have a load of different beliefs about many things but share a core trust in God is one of the most positive expressions of faith I can think of. Shopping around to find the church that agrees with everything you already think seems lazy and arrogant - challenge and diversity are essential in life as in faith.
Sure you don't get what you want in every way, but you do get to exercise skills of tolerance, argument and community. I'm not suggesting you should feel obliged to go to a mega evangelical homophobic stadium church if that is the antithesis of your belief, but then very, very few C of E churches are like that.
Holding onto liberal beliefs while actively engaging and changing the illiberal beliefs of others is a commission not a chore.
Lastly - one thought, why didn't you try the Quakers? Its not a ritualistic form of faith but there are meetings with clear purpose and format, its disestablished, and exceeds even the Episcopal Church in liberalism. An organised religion where members are called Friends and every book is treated as being as Holy as any other.