No, it's due to actually considering the notion of eternal life, outliving the universe, outliving everything, with no hope of escape.
We are mammals, and I've given a rough outline of our evolution
>here<. (I put it together a decade or more ago, and I haven't brought it up to date, but it should still be substantially accurate.)
So at what point, and how, did humans evolve a soul? And why? What exactly is a soul? And why don't all species have one?
Yup.
Only one version of it. I dare say there are still more than a thousand distinct kinds of supernatural belief in the world, and each of them with its own set of variations. And religion in the Western world is quietly changing, becoming more about personal feelings and more often than in the past dissolving into unbelief.
On the contrary, life is purposeful. It's about living long enough to reproduce. We're born with that map built into our brains and bodies. If a Creator did that then [he] did it by devjsjng a system in which evolution can occur (though Occam says you don't need the Creator hypothesis).
And thus the changes in the status of women are changing Western society; and the contraceptive pill is one of the most profound drivers of change to human life that's ever been. It may just in time save the earth from being overrun by humans ─ but we'll see in due course if that's correct.