U.S. News & World Report:  Increasingly, Americans are pushing back their ideal retirement age. The age workers expect to retire rose from an average of 60 in 1995 to 66 in 2011, according to a recent Gallup poll. And a Harris Interactive survey released last week found that Americans age 55 and older plan to work until they’re 69, up from age 64 in 2001. Working longer has a variety of economic and social benefits. “At the bottom end of the socioeconomic scale, people need the money and the insurance to make ends meet, and at the upper-end people are working because they want to,” says Joseph Quinn, a Boston College economics professor. Here are 10 reasons you may want to consider delaying retirement