Do you think that one day religion will become a thing of the past

[Amine]

The OP is not specifically talking about the US or even xtianity.

While I agree that the US is following Western Europe in dumping jesus remember that xtianity is still expanding in Africa and parts of Asia.  And then there is islam which may wipe itself out one bomb at a time but not in the foreseeable future.

The same wave of communication and media is going to be available in the rest of the world only a few years later. So yeah, the West will go first, but it's not like the rest won't follow.