The Biggest Source of Friction Between Spouses in Later Life

Couples who make it to retirement often find that spending so much time together can both be a blessing and a curse.  With this in mind, we posed the following question to The Experts: What's the biggest source of friction between spouses/partners later in life?

The question relates to the latest Encore Report and formed the basis of a discussion on The Experts blog on Dec 11th.