We're Going to Spend More Time Than Ever in Humanity

Even if we survived to had some kind of cohesive social structure, we ourselves would probably evolve along the way due to the compromises we'd have to make. Even for that alone, we wouldn't be there. There's so many more ways this could go wrong than it could ever even go half way,. Especially what you're saying with the expansion of the universe and depending on which direction you're going within the universe.