Is Earth overpopulation really that bad?
The total area of Earth is approximately 510 million km². Of these, about 105 million km² are currently habitable, while the rest is either covered by water or too extreme for survival—deserts, mountains, and glaciers.
There are roughly 8 billion of us. This works out to 1,300 m² of habitable surface per person, and 6,400 m² of total surface area.
Yet the vast majority of us live in cramped and expensive apartments, which makes it seem like if there were even more people, apartments would become even smaller and more expensive :). We probably live in crowded cities mainly because it's more convenient and comfortable there.
But we can think about it differently. Statistically speaking, the more people there are, the more of them emerge who can advance science and technology. Moreover, when such people join forces, a synergy effect occurs, and development starts growing exponentially.
And with technological advancement, we'll be able to settle new areas that were previously inaccessible, living there just as comfortably—or even more so—than we do now. For instance, if I had a portable fusion reactor, I could go to, say, Antarctica, or climb up into the Himalayas and grow watermelons there—after all, with tons of energy, you can do anything.
From such reflections, something seemingly "paradoxical" emerges: the more people there are, the better life becomes for everyone on the planet, and "overpopulation" starts looking like some kind of blessing.