Karl Denninger also has some interesting takes on this:
I like the ‘case against’. Right. The dude can live his whole life on $10 an hour and still save $2000 an year?
If we save $2,000 a year @ 4.5% interest for 47 years we will wind up with $307,345.27. If we do so for 42 years we wind up with $237,849.58.
This means that in future values that five years costs you about $70,000 down the road.