Calculated Risk plots the actual and projected change in demographics from 1950 to 2050, adds the observation that over-65s cost 3 times as much in medical care as their juniors, and the rest is future history.
Meanwhile, Leo Kolivakis looks at the looming meltdown in US pension schemes, mirroring what's going on now in the UK.
Long term, it looks like down with house prices (since the younger generation will have much less free income to take on debt) and (thanks to the oldies' rising income need) down with stocks.
Nurture your young.