Why does space matter?
I'm lucky in that I was born in the united States. Our family has multiple cars, a house to our selves, more food than we should eat. Our standard of living by any real measure is better than any group in history. The United States has about 5% of the world population and consumes about 30% of its resources. Personally our family is probably above average in resource consumption even for US citizens. So I'm going to ask and answer a series of questions.
1)Are citizens of China, or Sub Saharan Africa inherently inferior to my family?
NO they are not,I believe all humans are born with certain inherent value.
2)Do they have a right to aspire to what I have.
Yes they do.
3)Do we think that global terrestrial resource production can be increased 6 fold from what it is now?
No I don't think that is reasonable outcome.
4)Is there any process where U.S citizens will voluntarily reduce there standard of living by a factor of 6. No I don't think that will happen.
5)Do we the U.S have the right to use force to prevent others from having what we have?
No we do not.
6)Will some combination of conservation and increased production create a factor of 6 when adjusted for the ongoing population growth in the world?
This is the option that all the traditional "Greens" or environmentalists are betting on. They naturally feel that if we just cut back a little bit everything will be better. I just don't see it. It is such a violation of natural human striving tendencies I can't see getting to a factor of 6.
So unless you want to change the answer to one of the 6 questions above "we" the population of the world are in a no win scenario. Some things like good batteries and low cost fusion power could help significantly, but its not enough. Just imagine how much steel it would take to give every family on earth 2 cars? (Recent studies have shown that mass transit when fully accounted over the life cycle of the system are just as resource intensive as a small Car. )
Where will the additional resources come from?
Where can we do dirty industrial process where we don't soil the environment?
Where can we find unlimited energy?
Unlimited expansion space?
(Don't nit pick Unlimited in this context means several orders of magnitude more than we have now)
The only two answers are a 6 fold reduction in earth's population or expansion into space.
We are spending trillions on the assumed option in question 6 and simple math shows its not possible. Where are the trillions helping us expand in a way that can work?
Just something to think about....