how many times throughout history have we seen example of uncontrolled population growth lead to famine?
like it or not, the earth is a closed system with a finite amount of resources. If we don't take steps to control our population growth now, mother nature is going to do it for us later. and, trust me, it will not be pretty.
don't know about you, but I don't want my kids and grandkids to have to survive by eating soylent green