Humans have a god complex. Perhaps it is written in our DNA but either way it's there. We think for some reason the laws of reality don't apply to us. That somehow we can cheat the wrath of our own destruction. I mean wouldn't it be great if humans could fuck up this planet, kill off millions of animal species and then conveniently just leave off to another planet to fuck up.
But let's say we do send a small group, and let's make that small number actually a huge number for what we would really be capable of achieving, let's say 100,000 of the smartest most physically able bodies off into space aboard a ship capable of sustaining them indefinitely, then what? Where would they go? Humans will go insane if left on a ship floating through space, plus we would devolve into something none human like anyway. I mean people that go up into space lose a lot of muscle really quickly, within weeks.
Until we can travel the bubble or create wormholes or figure out anti gravitational propelled locomotion then I'd venture to guess humans will never go Star Trekking.