Your statement is clearly and utterly false.
The world is not getting any worse because people are not having kids. That's just fallacious pronatalist/eugenistic/racist propaganda from the likes of Elon Musk — which, by the way, blameshifts and scapegoats antinatalists as a menace to the world. Unfortunately, humanity won't go extinct anytime soon and it certainly won't happen due to antinatalism. Excuse my French, but saying that is bullshit.
Let's get real, shall we?
Most people don't give a rat's ass about philosophy and ethical concerns.
The truth is: it doesn't really matter if they are pro-lifers or nay-lifers. At the end of the day,
people are having fewer children because "the world" — i.e., quality of life — has been clearly getting worse since the 1960s. The world economy has gotten worse; social inequality has grown rampant, despite the fact that, yes, fewer people today live in totally miserable conditions;
the filthy rich have never been so filthy rich; the resulting environmental issues caused by human activity are distinctly getting worse at a pace humanity can't fix; there's political turmoil everywhere, and there's the possibility of a third — nuclear! — world war; etc., etc., etc.
The real and underlying reasons people are not having kids as they used to are: (1) people are generally more educated than in previous epochs; and (2) they realize life is much harder than before and just accept that they can't afford to have kids. Only some of them care about the precariousness of this decadent world, where their kids will grow up and live in, and conclude that it would be unfair to bring them into it.
Having kids is just something people can't afford anymore because it's a great unnecessary financial burden... Only filthy rich, self-centered douchebags like Elon Musk can't comprehend that.
Exactly.
And they only care about its birth because they assume the birthed creature will be a cuddly, fluffly teddy bear like this one:
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And not like this one:
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Because if It turns out that the creature has developed into the latter, they will soon enough rather have it jailed and executed in the electric chair.
"We are Pro-life, because life is a gift from God" ... Pro-lifers my ass. You are pro-suffering, torture and sadism.