Religion is used by the 'insecure' to kill/hate/force others to comply to their 'club'.  Religion initially and rightfully is used to help us understand what we don't understand.  Unfortunately, when people become so attached to their understanding that they can't allow it to grow and mature, they often feel the need to kill anyone who does allow change, or hold a different understanding that themselves or their 'club'.   I do not mean to be too colloquial with the term 'club'.  It is a 'sacred community' that holds particular understanding of what and how the sacred is held.  Again unfortunately, when BELONGING to such one of these sacred communities becomes frozen, the true values, the community is often the first thing lost sight of.