Retirement and Paying Off Your Mortgage

Should you pay off your mortgage?  It is a question that many wonder about.  Recently, an article in MarketWatch posed this question and gave its reasons for and against.  The final outcome:  it depends.
However, there are some good points that were made for varying situations and you can read the entire article at:
http://www.marketwatch.com/story/should-you-pay-off-your-mortgage-2013-08-14?pagenumber=2