This is only my observation.
I am involved in many groups because of my children,(Scouts, school,
church,parent baby resource groups...) as many of you are. I have
consistently found that the Christian groups have the highest incidence
of breastfeeders of any parent-baby groups.  It's delightful to work in
these groups and watch the number of bFing women.  I have never seen
anything that indicates Christian groups are anti-breastfeeding.  It is
biblical.