Welcome back to Retirement Hangout!  I recently turned 66 – Full Retirement Age for receiving Social Security retirement benefits.  Inspired by this milestone, I decided to check out several free social security calculators even though I plan to defer benefits until I’m 70.  Today’s post explores some of the thought-provoking results I found. As we all know, a successful relationship requires hard work; it turns out that this includes financial decision-making about when to take social security.  Couples need to coordinate their social security retirement benefits to optimize their joint financial welfare.  Exactly how they do this and what they decide will vary according to each couple’s circumstances, health, aversion…