We have enough people. We would be better served by maintaining or even decreasing population. The fact that the economic health in the short term relies on unlimited growth doesn't mean the earth can sustain it long term.
it's not black and white. Unlimited growth is bad but negative population growth unchecked means the end of modern civilization as we know it.
Right now we have negative population growth and it is not controlled negative growth. We did not intend for this to happen nor does anyone know how to stop it. So logically speaking; If the background context and status quo remains the same expect this trend to continue past criticality.
Even before that imagine not being able to find a job, product prices rising. Hardships, starvation. Ever watch the movie Children of men?
Imagine not being able to find a job because there are not enough people? Seems unlikely. I have watched the movie (and read the book) but I don't think that's a good place to look for economic analysis.
Yes because there's not enough people to run the systems that create jobs.
For example an airline without enough people to hire to maintain a plane, then the plane can no longer fly and everyone associated with the plane no longer has a job.
There's a small period of time where it's easier to find a job but eventually that blows past criticality and the jobs start shrinking faster than available people.
You could just train people people on the more critical jobs. No, I would prefer not to get into a detailed discussion of how long aircraft maintenance in particular requires training for or why anyone would wait until their back was against the wall to start reorienting around that need, and would rather address the subject from a higher statistical vantage point.
OK, so what? Some industries are more essential than others. I'd be more receptive if you leavened the alarmism with links to some statistical references or economic projections. I personally think much smaller populations (like globally 50% of current) would be a good thing for both the environment and humanity in general.
You don't need scientific evidence for everything. These are logical and self evident conclusions. In fact your own conclusion that declining population is good isn't even evidence based. You derived it from common sense, but the missing part is the nuance.
Either way Japan, China and Korea are all in panic mode right now. This is not some speculative issue I'm making up. It's deadly real and there is tons of evidence. Look it up. You're mostly treating it like it is because you're not as informed about the issue.