Although I agree with many of the suggestions in this article, I am concerned the author underestimates the some of the costs of retirement on $ 40,000 to $ 70,000 p/a. First of all, this is the pre-tax income. And it is a pretty skimpy income if you want to do any travelling. Nor do I see funds for replacing a car (at least once), home repairs, replacing appliances/furnace/roof, medical expenses, or paid help to stay in your home. I assume that the author expects people to sell their homes and use the proceeds to pay for assisted living/extended care. Speaking as someone who looked after my parents and MIL for 12 years. I have a somewhat less rosy view of the expenses of retirement.