It's more likely we die due to a stray asteroid than anything else. Not a whole lot people know this but we just barely dodge one last month. And NASA only caught eye of it 4 days before. It was 10 times the size of Tunguska, which is this thing that annihilated an entire rainforest and left a crater that formed a river over 40 years. Had it hit it would've wiped out an entire country.
Visiting exoplanets is still far off. Even at great speeds it would still take years. And the ship would have to be enormous, too big of a project for a bunch of puny humans, imo. Knowing us, puny patetic humans, we'd just argue about it before it being too late to react to whatever kills us off.
And light speed space travel is just an unrealistic concept, period.