I would love to see this thought experiment thought out in detail. What decisions would we make? Where would we invest? Would climate control still be an issue?
Anyway, there is no chance that humans will collectively decide anything, least of all that.
Beyond reasons why it would not maximize our quality of life, collectively deciding to not have kids just would not do any good. You are taking people 'like you' out of the gene pool, while people who choose to not go with the collective will procreate.
most humans have children because that is
maximizing their quality of life
Parents with grown-up children report being happier than those without children (but those with younger children are the least happy).
Parents often say their children bring them joy
but most research suggests kids cause financial
worry, stress and anxiety.
However, the latest research suggests children
do actually make people happier – but only once
they’ve left home.
But I'm genuinely curious about people that think like you. Okay, so everyone dies by about 2100, then what? What is the point of basically anything?
Already failed then.
Scenario 1) The universe will end in heat death, the big rip, or other similar cosmic catastrophe.
Scenario 2) The universe continues on for infinity, giving plenty of time for even the most ridiculously unlikely of events to occur. It is therefore inevitable that humanity or whatever progeny it might have will still ultimately cease to exist.
That's leaving aside that 2 is already pretty unlikely given what we know of the universe.
Also there’s this : http://vhemt.org/
There are over 100 million kids born per year.
So after one year we would already have less emissions caused by 100 million people.
After 20 years we would be 2 billion people less. That's quite significant.
Two because we should have second chances, and alone children are less socially adapted than those with siblings.
systems that maximize human rights and equality were created in a vacuum and ignore external side-effects.