The demographic headwinds facing the US economy are becoming harder to ignore. With fertility rates declining to historically low levels, the structural implications ripple across everything from labor markets to government spending sustainability. This isn't just a domestic policy debate—demographic shifts directly impact inflation expectations, fiscal health, and ultimately the appetite for alternative assets. As traditional economies face secular stagnation risks, understanding these macro trends becomes crucial for anyone tracking cross-asset correlations. The question isn't whether it matters, but how quickly the market prices in these long-term structural challenges.