The Ultimate Ten Foot Pole Question

Or
Is the question of our future an Import/Export equation?
How many people are too many people?
We are a 'closed' system. We can not leave this Planet nor can we have anything 'imported' form another Planet.
'Self reliance and self sustaining and coming together at the 'X' spot is the time when we WILL have to answer 'How Many People Are Too Many People?'
But these are literally questions of life and death and who wants to play 'God'. Sadly there are more then enough who want to 'play God' which should automaticly disqualify them. Should.
So in nudging us along to beginning to form an answer to the questions, we need to beware and be aware of ANYONE who would want to 'lead' us to our answers.
But that means WE need to come up with the answers.
Which means self control, self governing, self determintion. Because if We don't do it for ourselves, someone Will step foreward and decide for us.
If we (and we can't) 'import' more resources to provide for our future needs, then we need to either become very efficient and even begin to ration those resources or control (either by ourselves or via an outside authority) how many of us are to use those resources.
That's why it's the ultimate ten foot pole question.
Do each one of us decide to 'play', be our own 'god' or do we allow/have forced upon us someone else to act as our 'god'?
links
1. Documentary
http://topdocumentaryfilms.com/how-many-people-can-live-on-planet-earth/
2. Population clock
http://www.worldometers.info/
3. Fresh Water Shortage
http://theeconomiccollapseblog.com/archives/water-shortage
4. Food shortage
http://www.scientificamerican.com/article.cfm?id=civilization-food-shortages
5. Food Wars
http://www.foreignpolicy.com/articles/2011/04/25/the_new_geopolitics_of_food