Well this is simply not true.
I'm no fan of ballooning populations myself because I'm kind of a misanthrope but resource quanity is not the problem. There is more than enough to feed, clothe and house up to 15 billion people, just not at the same standard as the resource-guzzling United States.
The problem is logistics and political will. That's what we don't have to provide for 10+ billion people.
So be it. It seems more fair to me than some ad hoc chauvinism.
In any case, I don't think the suffering is really required. What is, in your opinion, the lifestyle that is possible to be supported by resources we have for 7 billion people?