For centuries joy and happiness have been looked upon as carefree attributes of childhood, which serious adults are not supposed to display. Joy and happiness were not valued as much as the so called "virtues". Hence happiness isn't a value that was passed on to us culturally.
Your ultimate Twin Flame is “whatever is not you“. In short, the world around you. Yes, it’s huuuuge. What does it mean practically? Trying to escape the world is not a way out. Hope to never be born again is a mere bypass to skip inner work that makes you accept and embrace this world without suffering.