Calling this a "health issue" is quite misleading, as these issues cut through the fabric of society itself. Sexual competition might have been a thing in our deep past but what we call "societies" in historic times were built around sexual regulations that ensured people wouldn't just 'leave because they have nothing to lose'. Ancient Rome's foundational myth contained the abduction of the Sabine women . In ancient Athens, Solon estabished brothels to limit adultery and increase social cohesion
> seeing Athens full of young men, with both an instinctual compulsion, and a habit of straying in an inappropriate direction, bought women and established them in various places, equipped and common to all.
Of course in those days, it was expected that if you were a decent-ish member of society you were basically guaranteed a wife (which you might have not even met) and a family that would perpetuate the same kind of society. Sexual competition is feral and fundamentally anti-society.
But that is the choice that people make, deliberately. we are increasingly individualists and have chosen to live that way , especially in western societies. Seeing this as a "problem" implies that there is a solution somewhere and that it is fundamentally a bad thing. But it seems that it is just the future. And there will be consequences as large percentages of mainly men feel increasing disconnected and having nothing to bind them in a society. As these men grow up, approach retirement or financial independence they will increasingly move to places where they can live with less strings attached. Not necessarily to a sexual paradise, but just to a place that demands less taxes, is more tolerant to single men (western culture isn't), that shames them less, etc etc. We are already having the trend of record numbers of households being single-person homes. The next logical step is to move that household to whatever place treats the individual best.