Quite. Due respect to Vint Cerf (seriously) but if the designers of IPv6 had spent more time making it simple (enough) to implement for your average user -- even home user -- and more importantly: demonstrated clear benefit to doing it, for the same audience, maybe uptake would be better.
Instead IPv6 appears to the average consumer or user not as an upgrade, but rather a complicated bother they don't need anyway. Argue all you want about the reality and puff out your chest about how easy it is blah blah blah -- that's still the perception today.
Small demand from users and consumers means no incentive for the ISPs and cable companies et al to offer it. Seems simple enough.