I think that almost none of us will be able to retire comfortably at 62.<p>You should plan for living expenses through your whole life, and you might well live to 100--and you pretty much have to plan for that, because being 90 and running out of money would be very unpleasant. But if you work from 22 to 62 and live &#x27;til 100, then you&#x27;ll have worked for only 40% of your life, so you have to cover all the expenses of your entire life during that short period.<p>If, on the other hand, you work until you&#x27;re 72, then you have an extra 25% of time to save and a 17% decrease in non-working time. The math gets much better.<p>The results of this math get worse if you believe we&#x27;ll see improvements in life extension during your life. If you live an extra 10 years, you probably need to work at least another few years.<p>In summary, saying people should retire at 62 seems short-sighted to me.