Religion basically is just a vehicle for delivering goods of spirituality, ethics, and morality. If the vehicle fails to deliver the desired goods or it is loaded with unethical and immoral junk by its operators, the recipient can refuse to accept that delivery. And rightfully seek another vehicle which only delivers the good stuff.
In his apostasy, this is what social reformist and anti-caste crusader Dr.Bhumirao Ramji Ambedkar did.
-by Promod Puri
Progressive Hindu Dialogue 