The author argues that going through an easier way of doing things ( especially meal preparation) promotes healthy eating. The author discourages a busy cooking habit that can affect timeliness in taking meals. This is evident from the statement, " When you get home from work late, why spend an hour in front of the stove when you can spend two minutes at the microwave?"
The ghost of Christmas yet to come has the most impact on Scrooge because it makes him fear what has yet to come and makes him want to change in any way possible.