Will we one day venture to the stars, or will we destroy ourselves?

Now life on earth has been establish it will remain in some form until the planet is destroyed. The thing with evolution is that it just grinds on remorselessly. We have been "human" for just maybe 200,000 years. So even if we become extinct we could be replaced by other intelligent life forms a thousand times or more before the planet is swallowed up by the sun. So even if we do not survive to spread out across the universe, others might.