I think we need to evolve somehow to not require oxygen, especially if we're going to become an interstellar species in the future. Anyway I sure as hell would like to live 300-500 years instead of the usual 100 years at best.Oxygen is one of the main contributing factors in aging. Pretty ironic, isn't it? Anyhow, I do believe pseudo-immortality is possible once humanity learns to stop cell degeneration. It's all a game of genetics, and we are quite far behind in this field.
I think we need to evolve somehow to not require oxygen, especially if we're going to become an interstellar species in the future. Anyway I sure as hell would like to live 300-500 years instead of the usual 100 years at best.