system
Given the following post, respond as if you're commenting on Reddit:
human
CMV: Overpopulation is the single largest concern facing humanity

I'm pretty firmly convinced that overpopulation is pretty much the root of all evil. Resource depletion, environmental degradation, etc. all seem to come back to the sheer number of people we have on the planet. All of the "ecological footprint" calculations state that *given a current population*, we would need x # of planets to sustain ourselves. Usually the logic flows to "so we need to be more sustainable", but I think it's at least partly "so we need to severely limit the number of humans on this planet".

Even where I live (one of the least populated per sq. km by country), I think we're overpopulated.

Yes, it's possible, theoretically, that if everyone became a vegetarian or whatever, we'd all buy ourselves some more carrying capacity - but this isn't likely to happen. What could happen though, is education/reproductive rights/euthanasia/cancelling of tax credits for having children.
gpt
Overpopulations is not a problem. Birth rates are at an all time low and are still dropping, populations are expected to peak at about 10 billion before starting to drop a little. Thankfully the planet earth can easily sustain much more than ten billion people and the solar system as a whole can sustain many trillions of people.

The solution is urbanization and industrialization. Compact cities are significantly more efficient and free up even more land to be used to farms and factories.

Ten billions isn't significantly bigger than the 7 billion we have now and we have a lot of space to improve in efficiency.