Today, the only 'material' way for the average person to satisfy their desire to conquer death is by having kids. The institutionally promoted way, though, is to exploit the lizard-brain to produce feelings of life-generation through various forms of sexuality.
I think it's important to remember that sexuality as the only vehicle for satisfying the human requirement for immortality is an almost exclusively early-modern phenomenon. It started in the West with the Protestant Reformation, when Luther got rid of monasticism—although you could argue that this was a reaction to the Roman Catholic devaluation and forgetfulness of the authentic Christian mystical tradition (which was already deteriorating in Western Europe before the Great Schism, but accelerated afterwards).
The problem with this is that, while in theory it still has a place for non-reproductive immortality in its worldview, the average person doesn't have a way to participate in that active immortality-process outside of sexuality anymore once ascesis has been removed. In the authentic tradition, life-force and virtue-force are seen as the same thing in a way: "give blood, receive the Spirit". Sexuality is in many ways a lower reflection of ascesis, and Western Christianity gradually lost this as a core part of its experienced tradition.
Prior to this (and inconsistently afterward, though not in a mainstream capacity in the West), every civilization has had its ascetics, celibates, and mystics. Many of these traditions—such as Jewish Kaballah, Hindu Kundalini yoga, and Taoist alchemy—tried to reach or realize their immortality through the manipulation and transmutation of sexual energies: examples of such energies are nefesh (in Kaballah), prana (in Hinduism), and Qi (in Taoist alchemy). In Christianity, rather than transmute created sexual energies, the Holy Spirit gives the life-force directly from outside of the created machinery of sexuality—that being said, the common thread through most of these societies has been the idea that sexual reproduction, while not necessarily evil, is a lower path than the mystical (and often a material analogy and reflection of it).
After Luther dethroned monasticism, and around the time that Deism began to degenerate into Atheism, Charles Darwin re-oriented all of life to center around the sexual drive: in his system, every functional part of the human being—including his psychology or "soul"—is there to help him reproduce.
Less than half a century later, you got Freud (who reduced everything to infantile sexuality)—as well as the sexologists' (particularly
Krafft-Ebing's) invention of the category of the "Homosexual". Even French pedophiles like Foucault could tell you how sex-obsessed Europe and America became during the period from the Counter-Reformation up to the twentieth century, finding all kinds of excuses to "multiply discourses" on it and develop their own "science of sexuality".
Today's evolutionary psychologists continue in the ethos of Freud in reducing the human being to a sexual automaton, while today's "queer theorists" continue the work of the nineteenth-century "sexologists" who kickstarted the modern pantheon of "sexual identities". Both of these—while you could argue that evopsych has some legitimate insights—are examples of modern myth-making disguised as rigorous scientific disciplines.
Speculating that men and women's psychological differences arose because men had to fight bears and women had to pick berries is no different from uncontacted tribes talking about how men and women are different because the gods split the primordial hermaphrodite in two or whatever: we weren't there; they're both examples of people telling stories to explain the world around them using the limited categories of thought and experience available to them. It says more about us and how we view things than it does about where we came from.
Queer theory—and the whole "lgbtqia+" as a concept—is religious initiatory psychology applied to deviant sexuality: it posits that your "true self" is hidden and that you need to "uncover" or "realize it" through the particular deviant practice you've chosen (or, alternatively, been given by the group) as your "identity". For them, your "gender" occupies the same same space as the "buddha nature" or "image of God" (not to conflate those two, of course) in other traditions.
All of this, I believe, is to collapse creative and mystical psychology into the sexual drive. I don't even mean in a reproductive sense: I mean purely in the sense of exploiting the lizard-brain to produce life-feelings in lieu of any real hope of enduring life. People don't look for immortality anymore: they look for "self actualization" and take anti-depressants.