This is one of the main things that bugs me about Mars One. Unless you really want to learn about how quickly humans will die or go blind on Mars, there isn't much of a compelling reason to go there. If you want ease, something that is within our grasp, and a lot cheaper, a Lunar program would make far more sense. If you want something that would give a larger benefit to having humans on the surface, there are numerous other candidates. Hell, I could totally get beyond a Titan colony. I don't even care about dying Horrible if I could look up and see Saturn hanging in the sky just once.