Everything in your comment presupposes a one way trip, which it doesn't have to be.
Furthermore, the idea isn't just to get there and whittle on your rocking chair until you die. There will be a plan to start building out facilities which is an endless task that will keep colonists busy.
Furthermore, the idea isn't just to get there and whittle on your rocking chair until you die. There will be a plan to start building out facilities which is an endless task that will keep colonists busy.