You may of course have different ones...
- Behaviour of believers.
- Access to news
Disgust at the widening gap between what they do and what they tell us we should do has approached the levels of disgust felt in Middle Ages Europe at the sale of indulgences by the Catholic Church and the blatant debauchery and gluttony of the priesthood which led to the Protestant Reformation. The difference being that this time the disgust has driven people to examine the very foundations of religion and to find it wanting.
- Income disparity.
In many parts of Europe ordinary people now enjoy a lifestyle formerly the preserve of the rich and middle classes. Consequently, the attraction of religion with its promise of 'jam tomorrow' if you accept the dry stale bread of poverty, deprivation, squalor and hopelessness of today has been reduced. At the same time, education has provided an alternate view of reality and a reluctance to settle for what we are given by our social 'superiors'.
- Religious terrorism.
Moreover, the 'morality' they promulgate is at best no better than that of non-believers and at worst is malignant and primitive, reflecting the values of Bronze Age tribalism rather than of modern industrial democracies, and are open to exploitation by manipulative self-interest. It also inhibits the development of more appropriate ethics as society develops so increasingly detaching them from the needs of society.
- Aspiration towards a classless society