From my point of view, more people is a good thing. As a percentage, people generally are good hearted rather than evil. As a percentage, more people not only pull their weight but add much more than they take. The percentage of people who take are lower than the percentage of people who give.
Let’s say that 80% are good, creative people. 20% glom off the rest. A very small minority are actively hostile or evil. Therefore, if you add ten people, you have eight people doing good things, outweighing the bad the other two people do.
Of the eight people who are doing good, one or two of them do amazingly good things, like cure cancer or invent rocketry or create masterpiece art. The great inventions are individual, not committee-driven. All art is created by amazing individuals, not masses.
Because of this, I am not worried about the global population. We add a million people, we add a few thousand incredibly brilliant people who change the world for the better, and hundreds of thousands of great people who add to life on this orb. To my mind, this outweighs the few bad apples.
Can we feed them? Well, we always have. Smart people figure out how to feed themselves and their families, and so doing, figure out how to feed the rest of us.
And, I believe I have proof that I am right:
There are more people living now than have ever existed, and
We have the best overall living conditions that we have ever had, and
We know more than we have ever known before.
Yes, there is plenty of evil, cruelty, and pain in the world. Yet, despite the evil in the world, Good is winning. And Good is winning because as we add people, we out-number bad people more and more and more.