Isn't the percentage of non religious rising globally? We can't really ever converge into one way or another since the distribution of intelligence among population will always be the same. Some people will need religion and some people will need rationalism. As long as we have religious freedom the only thing that will change is converging from imposed religious declaration to real/actual one
I find it to be pretty convincing. People tend to create projections of the future based on the current world, which is of course quite limited. Very rarely do we consider the actual cultural background of the “people of the future.”