Retired and slow are two different things.
Retired means I get to choose what I am going to do and when. It does not mean that what I am doing is not important nor that my time is any less valuable than when I worked.
In fact, in some ways I seem busier now than when I worked -- despite a rather responsblle job. As I told a friend recently that asked how I liked being retired, "I am not sure how I ever found time to work!"
Sooooo, being retired is a poor excuse for being slow or inconsiderate.