I see a lot of materialistic existentialist philosophy in this thread. Existentialism to me always had the air of hopelessly looking up at the stars and feeling like an insignificant spec. In existentialism, there is no purpose, no god, no whimsy or mystery, because the philosophers themselves didn't understand enlightenment, they had assumed that they were already fully evolved and matured beings because they were "educated" and respected among their fellow "academics", so anyone who possibly thinks that there is "something to get" that they already don't is preposterous, this is the reason why in the West ancient traditions and non-scientific viewpoints are spat on as infantile & barbaric. To me existentialism reeks of blindness, and the "there is no meaning, you have to make your own." is just stating the obvious, and perpetuating the trap of defining yourself by your grindset and its results, but everyone is entitled to their opinion. I prefer internal validation rather than external.
I have come into contact with a lot of new-age people and all they talk about this whole "life contract" and "you chose to be here to spiritually evolve" schtick. They gaze off into the distance and bask in their psychological salve, knowing that everything is a-okay. There have always been "new agers" throughout religious & mystic history, (their bullshit makes up plenty religious canon across the globe) people who are early on the trail and think they "get it", when really they're just holding up a picture of reality while understanding nothing. Their worldviews are hazy and underdeveloped, unthought out and tainted with wish-fulfilment, which is isn't a bad thing in itself, everyone is spiritually a child at some point, but the problem is some people are planted in bad soil and stay children their whole material lives, (thus requiring further incarnations to mature) then their numbers grow, until there is almost no good soil left on the Earth and the birth of a human with a soul in the world of the soulless becomes a clinical diagnosis. I'm not all knowing, but I'm not ignorant either. I'm sharing my perspective in the honest hopes that it will help you evolve within your living flesh and grow, because the stakes of understanding yourself are your very existence, they couldn't get any higher, understanding this couldn't be any more important, so put down your social-media for a minute.
Incarnation is defined by most traditions as spirit coming into flesh, something as individual and unique as a spark of light (so not at all), coming into a totally unique and unreplaceable shell of flesh, a unique looking human in a totally unique setting (A thermodynamic miracle, if you will ). The shell has individuality, but the spark of light is totally without identity because it itself is a shard of the material that makes up reality. The dynamic is difficult to grasp because it can be described as 1 entity (The All), a partnership of 2 (A shard of The All powering a bag of flesh), or 2 entities who's communication creates a 3rd, like the process of Hegelian Dialectics, making it a trinity, they're all applicable.
Either way, everything in the physical cosmos is transient, adapting, evolving, like one all-encompassing stream. The flesh of the individual dies away and the spark of spirit is left stripped of what it identified as, having been pushed up out of the stream. Hungry to be defined in any way, likely just as unconscious as it was before it last entered the stream, it dives into the material again and gets lost in identification with its shell, before losing its identity again and continuing the cycle endlessly, the direction of the cycle perpetuated by the decisions the spark makes while alive, this can only be truly understood when solar consciousness is experienced and the spark is awakened within the flesh.
Evolution happens through death and rebirth, and man is that final stage between the animal and the divine. Regardless of how rare and special this incarnate opportunity is, you're born a human, that means you can be aware of your animal instinct, and also realize the divine awareness you have, your flesh and spirit both. The purpose of your life is to advance, spiritually, like you claim, but to do that you need to willingly give up your animal nature & it's ego, to die and be reborn while alive. Wildchildx11 needs to die and be seen as the illusory construct that it is, caging the divine spark that you are.
The "purpose" of incarnation is the awakening of the spark so that it can act with its full power within the stream and outside of it, rather than being limited to the power of its meaty shell while in-stream, then coming out of it a blank, unconscious spark of light.