[nostrademons]

I think the idea is that Mars is just a stepping stone, and soon we'll be setting out for Alpha Centauri, Procyon, Tau Ceti, Vulcan, Betazed, Tattooine, and so on.

Hell, Zuckerburg, Yuri Milner, and Steven Hawking are already planning it:

http://www.theatlantic.com/science/archive/2016/04/yuri-miln...

[rbanffy]

More like a stepping stone to Saturn's moons and the asteroids. Once we get used - and capable - of living without a planet, there is little reason to bother with deep gravity wells.