Everyone has his or her own ideologies, be it political, social, economic, religious or whatever. There's nothing wrong with that as long as you do not press that onto other people to a dangerous extent. Different views exist next to each other and keep each other at bay avoiding destructive radicalism. This actually makes them complement each other, creating a something that can actually be realy practical. This is why democracy is generally a succesful system.
Religion, however, has a particular tendency towards the, in my opinion, very dangerous concept of absolute truth. Less spiritually inspired people usually do not have this, except maybe for the most radical amongst them, such as fascists or maoists. This, however, is mostly fueled by things like poverty, exploitation or repression.
In religion on the other hand, there is usually a belief in a surpreme force judging over good and evil that must be obeyed. Therefor, non-followers need to be converted and incompatible legislature needs to be eradicated. This, at its core, always leads to intolerance. Even clearly intelligent and educated people with good jobs seem to sometimes show this form of intolerance and pass it on to their children.
Religion, however, has a particular tendency towards the, in my opinion, very dangerous concept of absolute truth. Less spiritually inspired people usually do not have this, except maybe for the most radical amongst them, such as fascists or maoists. This, however, is mostly fueled by things like poverty, exploitation or repression.
In religion on the other hand, there is usually a belief in a surpreme force judging over good and evil that must be obeyed. Therefor, non-followers need to be converted and incompatible legislature needs to be eradicated. This, at its core, always leads to intolerance. Even clearly intelligent and educated people with good jobs seem to sometimes show this form of intolerance and pass it on to their children.