We can have:

1) a ceiling and a floor
2) a ceiling but no floor
3) no ceiling but a floor
4) no ceiling and no floor

Option 3 is what humans want to do. No limit to our potential, and no equivalent downside to that. The floor of course can't be too far from the no ceiling top either, because that's not fair. So the walls need to be widened, the floor pushed up, and no ceiling.

The Green Revolution is like the interstate highway system. They're some of the worst things we could've done environmentally, but how would we even start to limit ourselves? Limits mean death catches up to more of us more often. Most forms of life don't want to die.

It all comes back to the human brain, and the imagination, and the ability to amplify everything that we do through increased tool use. There's no fix for that. Even if there was, it would probably require more technology.

Fairness, and death. How do we increase the former, while decreasing the latter. That's the human experiment.

From the so-called "Toba Catastrophe" until the dawn of agriculture, the number of people on the planet grew by only about 150 individuals per year. It's been all uphill since then.

The original invention of agriculture and the Green Revolution are canonical examples of Sevareid's Law:
"The chief cause of problems is solutions."

NB: The "Baby Boom" of the 1950s never actually stopped...

The fair way to do it is to give women the ability to increase their options in life. That takes more energy and resources. Then everyone that is already here on the planet, male or female, who don't have enough options, also have to have the ability to increase their options. That will increase the need for energy and resources. As long as we keep adding just one more person every year, it will require that much more to make life fair for that person.

If we live on a finite planet, something will have to give. Either we'll get the energy we need, and other forms of life will just have to go because human beings rule the world, or we won't get the energy we need, and that will be interesting.

We can reduce the growth rate a little in the time we have left, but a humane decline in our numbers is just not going to happen.

It's probably better just to focus on doing the best we can before Nature takes its turn at bat. In baseball-ese, we're up in the top of the 9th with two outs, and the count is oh and two, so we won't have long to wait. I think Mother Nature is going to swing for the fences when she comes up.