Retirement Age?

Many consider the current standard retirement age of sixty-five a relic of a time when health woes often hampered the productivity of older workers. Today, with life expectancy in the United States reaching eighty years, many older workers argue that they are fit and willing to continue working into their seventies and beyond. Medical research, however, seems to indicate that while older Americans are fitter than they used to be, they are nonetheless physically and mentally slower than their younger counterparts. Should older workers still be compelled to retire at age sixty-five? Explain your position with reasons and examples from your own experience, observations, or reading.