Why doesn't the society allow open communication, feedback and discussion, or allow ones to leave free of ridicule? Why promote bitterness and hate?
I think that this bitterness and negativity is common in most-to-all religion. The negativity is to feed people's fear that there's nothing else in the world but depending on their organization. The hate and bitterness promotion comes from the fact that they all claim to be the one and only groups who has the truth, that it's right about everything. Therefore, nothing and nobody else outside is worth of any kind words. Also there's this grandiosity that many people who claim to be in the one and only truth feel, so there's no real need to be considerate, compassionate or nice. Finally, they are only nice and "compassionate", and show respect for other people when and only when it fits their agenda, that is, gaining converts or get something done to accommodate their believes.