I know of people who have reached retirement age with more money than they could ever spend, who retired and soon found that they weren't happy "doing nothing". They went back to work because that's what made them happy, made them content by filling a need for accomplishing more than doing stuff around the house day in and day out. I have no problem with that.
When someone not only puts a title on the action of their retirement, but they also merchandise the heck out of it, then they change their mind, it just doesn't smell very good to me.
Bob