At first glance, Mars seems familiar: polar ice caps, large valleys, liquid water under its surface and a day barely longer than Earth’s. It would seem to be the ideal place to colonize. Unfortunately, Mars is a cold radioactive desert, where the ground is poisonous and breathing is impossible.
Mars is awful. The pioneers on Mars will have an intensely stressful life, filled with incredibly challenging problems never encountered before but there are plenty of people volunteering to do that work and the technology exists to enable them to do it.