Spirituality, religion, "searching for the meaning of life" or whatever you want to call it are always part of the human experience, yes. Not being able to act on them can certainly be very detrimental to ones life.

For many people yes. I do not follow any religion myself but I accept it is part of humanity at the moment.

"About 85% of the world's people identify with a religion. The most popular religion is Christianity, followed by an estimated 2.38 billion people worldwide. Islam, which is practiced by more than 1.91 billion people, is second."

https://worldpopulationreview.com/country-rankings/religion-....

Apparently. Without one, everyone ends up making their own.

Take UFOs for instance. Still absolutely no proof whatsoever that they exist but atheists are still obsessed with the topic.