Well, for thousands of years the most advanced technology was a hammer. How do you know we wont go another thousand with our current technology? Current technology being what's getting worked on now which includes theories. You must be an american to actually believe that shit they put on that film. I've heard both sides. People died because of that bullshit; I think you took it too far. The world laughed their asses off when they saw how fake it looked. You know why they wont go back? Because they can't, not even now. If they did, they'ld probably melt completely or get fried thru their visor. And if anyone tries to examine the moon, there will be an unexplained sabatage before it happens.
Mars might be a possibility if they can convert all it's CO2. And if it has a magnetic field like earth. That is if the atmosphere consists of mostly CO2. But we're talking about 100's of years of no natural disasters. Possibly thousands to create an ozone layer. At the very least maybe those glaciers might be useful if we ever manage to master anti-gravity. Are you at all aware that it took 10 years just to get there? Every space launch is harmful and possibly very dangerous to our own planet. We may destroy ourselves by trying to expand.