"Why can't we crash on some lush tropical world where there's lots of water and shade and edible fruits and small tasty creatures who are easy to hunt? Is that too much to ask? Can we do that?
NO! WE have to crash on baked-out desert worlds that haven't seen rain in ten million years, where the wildlife is more spines and claws that good meat, and the next ship here MIGHT pass by in maybe just half a Galactic Year!"