All over the world, people are working past the usual retirement ages. In some cases, this is due to the minimum age rising, and in others, people need or want the income, the security. But, as I’ve discussed before, many people are continuing to work because they want to, because being 65, 70, 80, even 90 is not the same today as it once was. The idea of retiring at 65 today often feels as foreign as it would feel to a 45-year-old.