Sure, but this conversation was Mars vs. the moon. The only argument the moon has going for it is that it's a short trip.

Mars does have a reasonable atmosphere (albeit not breathable, it's mostly CO2), and therefore does have some hope to be terraformed to earth-like levels. We will probably have to use closed systems (greenhouses with water recycling) until we heat the planet up a bit and get it back to the state it was when it had running water and precipitation.