I suppose you never know when you could need it . Maybe one day your toilet breaks . Bet you ' ll wish then you had a litter box . <| sep |> Tip Do everyone a favor and put the damn toilet seat down . <| sep |> Name the regulations you want to get rid of . <| sep |> Here ' s a ' Assistance Required ' for you . <| sep |> If you can build a generation ship , that is , a fullfledged space habitat complete with longterm life support , accommodation , food production and recreation for a significant population , why the hell do you need to bother with planets anymore ? You ' re not only a spacefaring civilization , but a spacedwelling one . A civilization able to turn the materials of a mediumsized asteroid into such a colony could just keep on living in it . It could target any star with a semblance of an asteroid belt with colonisation ships . First robotic ones , to manufacture habitats , then the colonists themselves . If the system has a habitable planet , that ' s a bonus , not a necessity . In any case , longterm thinking is indeed essential in these matters .