Depends how long you have.

I hope we come up with warp drive or something crazy, but technically I don’t see any way this happens.

But if we could, we would ruin wherever we find habitable, and it would be the impetus for us to totally trash the Earth because suddenly it’s disposable and we can just go to Elysium or whatever other place.

We’d find planets and just fill them with toxic waste factories, because who cares, “we” (the rich) don’t have to live there.

We’d take visa scams to the extreme, forcing people into slavery on planets they could never escape from, and quash uprisings with bombs or stranding the people there.

Humans are too greedy and flawed.