There is a chance even Mars could be out of our ability but it sucks we haven't even been able to try and go to Mars yet.
We can dream but I think we would need some scifi technology to be able to make it out of our solar system and from what I have read Mars is the only potentially inhabitable planet in our solar system.
We do need to do a better job with our planet. If will be nice when we get all of our solar power up and running.