LW · GW
It will be sad if sex disappears only because there is no need for biological reproduction.
But Utopia and Dystopia are parts of reality and human existence, if we were to eliminate one of them, it would create unpredicted problems. Weirdtopia is a mutation of both, and it may work, or not.
Change is disruptive, and if it is profound it can cause a strong resistence to it. Eutopia is scary, even if you could guarantee complete safety, people will resist it.