Human beings have been able to sustain the ever-growing population for thousands of years in billions, even.

https://en.wikipedia.org/wiki/World_population#/media/File:Population_curve.svg

The rates of population growth we have today only really started at most 2000 years ago, and even then we didn't start having a huge population growth until the near 1500's.

The rest of your comment is in a similar format. Grand claims about how we are "sucking the earth dry" without describing a single actual situation in which it is true, or showing how these situations are dire or of massive issue.

The only think I am aware of myself is the fishing in the oceans, where we are absolutely screwing things over. Otherwise, most environmental issues faced today tend to be well regulated and maintained.

And recycling things most often isn't worth it. Money is not just a thing people collect, it's a proxy for resources used to accomplish a task. Something not being profitable, such as recycling, is a tell that the energy and effort required to recycle costs more, and as a proxy, damages the environment more, than just getting more oil out of the ground.

Most all land use by humanity is in the form of farms. Most of our most severe non-global warming pollution (in the first world) comes from making food, and maybe cars.

The tech to be sustainable in matters like that may be there, but it's neither effective, or worth it. If it were, people would be using it.

So here's your motivation to do better: unless we do, we're going to either starve, die of sickness or drown

What you are forgetting is that people are doing better. When the challenge rises, we face it. We don't sit around with our thumbs stuck into various areas, waiting for everything to fix itself. Even today, renewable energy is rapidly expanding, becoming more efficient, and looking to replace other forms of fuel. Pioneers in electric cars are making vehicles that are just better than what exists today.

It's a pattern repeated time and time again. We find something new, and use a resource. Oil, for example, used to be largely supplied by whales. Then, when that resource starts to deplete, new technologies are founded. Real oil, electric lighting. Finally, we start to run low on that new resource, and move on to the next one.

Copper used to be something that would run out. Then we found fiber cable. People have been declaring famine and the end of human population growth for centuries, never correct.

If society shut down the moment we faced big obstacles like this, we wouldn't be here today. It'll adapt, figure out what to do, and beat whatever the world throws at it, and will continue to do so regardless of how many doomsayers announce the end at every corner.

Global warming isn't going to be an issue, because we will find a way to fix it. It's a long-standing pattern in society. However, we can't just shut down in the meantime, expect everyone to just stop using resources, because then we end that pattern.