I can feed my family with a small permaculture farm, some chickens and goats, without relying on anyone else. I can heat my house with wood and solar energy retained in water, again without relying on anyone else. If my farm is surrounded by polluters and thus the ground is so tainted that nothing grows without buying Monsanto's entire catalog, that would be the fault of Republicans who've blocked environmental regulation.
Your experience is valid but the population density of a particular city (or lack thereof in a particular territory) is a poor indicator of whether the earth's population is too high for its carrying capacity.
In what world is this remotely good for the environment, in any way?
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Also, if you do really live on a farm off the grid, you might be interested in this NYT profile: https://www.nytimes.com/2023/03/10/opinion/thomas-massie-rep...
You might argue that more people produce more other good stuff, but that is a flawed argument for a few reasons. For starters, a lot of scarcity in our economy is fake and introduced to maximize profit. Second, there's only so much valuable work to be done, but everyone has to have a job, so somewhere between 50-80% of people end up doing meaningless work (think of all the people involved in making/marketing a lot of infomercial garbage and lame tchotchkes like dog bowls shaped like toilets that flush when the dog eats). Nobody would miss those things if they'd never existed, and I'm sure none of the people responsible wanted to do that sort of thing growing up. It's basically a big capitalist circle jerk.
2. Poisonous chemicals leech into air, soil, water. Then they accumulate up the food chain. Humans are at the apex.
3. Synthetic hormones, plastics, and etc. decimate fertility.
If you’re concerned about population growth, you should support some degree of environmental regulation. Only one mainstream* party in the states gets you that.
* A mathematical consequence of first past the post voting systems is that the two largest parties are stable. Third parties only exist as unstable equilibria. If you desire a serious third party, you should also support election reform. . . which also means not voting Republican.