meaning of life

At what point did we come to realize individual human life has meaning, that our brief existence meant something, or that it should. At what point did we gain self knowledge. How or when did we grasp self awareness and introspection to help us along in our search for that something. Spend our lives searching. We honed our ability to transmit ideas about our existence and in so doing left a trail of evidence. Arts & sciences, architecture, music, oral and written histories - basically we built meaning into our species existence. All that we do gives meaning to life, to make sense of it. Find any purposeful idiom. But what if, at the end of the day our efforts, mundane or lofty come to nothing at all? At what point in human existence are we okay if life has no meaning and we’re okay with that. Self revelation. Humans survive with or without looking for or finding the meaning they seek. Thrive without it - it’s an innate ability.