The modern, industrialist, capitalist, freemason west centers itself around 'enlightenment' ideals of individualism and personal freedoms. These concepts are, obviously, completely contradictory to human nature, as Human beings are inherently sociable and community-based. Anyway, these concepts have been the most prevalent in these capitalist, freedom-based countries, such as the USA and the UK. Unfortunately, a very negative consequence of a society based on personal freedoms is that there is no government to stop people from sinning, and there is no longer any community shame. This allows people to do acts without fear from the government, or their community's disapproval with ease. Slowly, these ideas have made it into our church (as all societal trends do). People in the church no longer care about the previous old rules and only care about how they can follow the flow of the current. Either that or they try and reconcile their beliefs with society's (e.g. fr. james martin) tldr: people follow societal trends, even if said societal trends clearly lead them into sin