One of my most valued traits, reading things wrong. Maybe we could overcome the 'vast-distances' problem by unlocking the mysteries of quantum mechanics. Or maybe by bending space-time via wormhole tunnel, what do you think?
And if the vastness of space presents a problem, the near (it seems to us) endlessness of time presents solutions.
How would you explain any lifeform travelling at the speed of light surviving such a trip. I do believe their body would implode from internal pressure?