Belief Systems and Evolution

Does humanity have any future?  Shall it survive?  Well, yes, but not in its present form.  What shall cause it to change?  Belief systems shall.  How?
We know that any isolated human breeding group separated from others for a sufficient period of time (a few hundred years) must undergo profound change within the human accelerated region (HAR) of the human genome's DNA.  The HAR is responsible for most of the rapid evolutionary changes in humanity.  So, given this scenario of a necessary prolonged isolation; is it then possible for human evolution to continue?  We already know where and why evolution happens: an isolated breeding community and the HAR of the human genome.  But given the extremely rapid technological advances in communication and in transportation, is it possible to have isolated communities in today's world?  We know we need isolation for HAR changes to happen.  The answer is: yes, because isolation occurs in humanity for psychic as well as physical reasons.  For instance, some religions prohibit sexual relations outside of their faiths.  They prohibit inter-marriage (and inter-breeding) with anyone outside their faith or religious sect.  The also encourage early marriage among members of their faith communities, and some faiths even encourage multiple marriages.  Given sufficient isolation, adherents of these belief systems undergo genetic changes.  Some have already done so.  So, some people of some beliefs are indeed different from others not of their belief; not just because of difference in the customs of the belief, but because they are truly genetically different:  Real purpose behind religious belief is enhancement of evolutionary change!