The reason I enjoy seeing the ranks of atheism grow is because I think there is still way too much superstition in the world. If you take all the religious activity and then add in ridiculous crap like astrology, psychics, Tarot, “woo”, pseudo-science, etc., etc., it adds up to a shit ton of wrong and dangerous thinking. The less of that the better. While atheists are no better and no worse than other people in other respects, when it comes to critical thinking, they outperform the average and then some.
Religion is a gateway drug to an arbitrary and dogmatic world view that tangibly hurts us day after day in countless issues from birth control to foreign policy.
The only reason we talk about atheism at all is because we are a society ridiculously soaked in religion. In many parts of the US it is just assumed that you not only believe in god but that you are a Christian. In many Muslim countries the state and the church are the same thing. It’s practically or literally illegal to be an atheist. So yes, of course we talk about atheism. It’s important.