Religion is in decline among industrialized nations. There are some European countries that are majority atheist. The U.S., which is the most religious of Western nations, has as many people who are religiously unaffiliated (the so called nones) as there are Catholics, and the rate is even higher among millennials. I see no reason for why the trend should not continue.
This article discusses the reasons behind the trend. It predicts a short time until we have a majority of atheists worldwide. I find that hard to believe, given the concentration of population growth in poorer nations and the connections between poverty, ignorance and religion.