>>11629090>what the fuck even is ageing Your body finishing development. After your prime, it starts falling apart.
>why the fuck does it happen Because you don't come out of the womb an adult. Your ancient ancestors likely didn't get to the age a while past your prime (you can't reproduce if you're dead). So there was little to no selection towards the body being able to live much longer.
>how do we stop itI don't think having everyone remain an infant would be a good situation. Neither would having 500Billion on one planet because they've cured dying.