Welcome to Sciforums, essexman. May your posts be long and varied. The idea of whether to use space as our habitat or a planet is a long debatable issue. On one side to make a habitat in space would be easier than trying to terraform a planet. True. However terraforming a planet is something that sooner or later will be tried. Why? Near earth's area we have a backup in that our home is not far away if we get into trouble. Should earth disappear from catastrophic circumstances, as a liviable enviroment, we shall have no other area that suits us. Several possibilities supply that scenerio now. Birthing and body degradation due to space and its effects at this time do not allow us to spend long term lenghts in its enviroment. As such a hospitable planet is required.