Kinship and community, as well as personal experience and meaningfulness, are important aspects.
Sure...
But at what cost? The intelligence level of an entire society is brought to it's knees because they don't understand the basics of science... Science brings us so many good things like medicine, electric power, and global communication... yes, we also get bad things like weapons... but they go hand in hand due to our very nature...
Michio Kaku is a famous Theoretical Physicist who said that if we try to calculate the progression of our achievements to estimate where we would be at some point... we can predict, with a good amount of certainty, that in 100 years we will live a world similar to what is seen on Star Trek... (perhaps the global social structure will take a bit longer, but the technology would be present)
Provided... 1. we continue our scientific advancement at the same pace.... and 2. we don't destroy ourselves with our technology first...
There is simply no way we can expect to make it to that point if we teach our next generation incorrectly... how can we possibly expect them to continue the progress if they can't make heads or tails of any experiments because the data they observe doesn't make any sense when compared to their core beliefs...??
And besides that whole "progress" thing... we don't NEED religion to achieve a sense of "Kinship and community, as well as personal experience and meaningfulness"... Every member of the Clergy Project, that I have read up on or heard about, has said that the members of atheists organizations are far more welcoming and less judgmental than ANY religious group they were ever a part of...