I'm more interested in known quantities than unknown ones. Besides, I'm not the one going to Mars, nor are any of the people who I think deserve to have their lives improved.
It is a known that eventually a planet killing asteroid will hit the Earth (again). We just don't know when.
But, more importantly, it is a misconception to think that the people GOING to Mars will have their lives improved. Life on Mars will take a very long time to become as good as life on Earth. But the tech developed to make living on Mars possible will help people on Earth.
